======================================
| [   20.105161][  T315] ip_gre: GRE over IPv4 tunneling driver
| [   20.161901][  T314] ------------[ cut here ]------------
| [ 20.162357][ T314] WARNING: CPU: 3 PID: 314 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) 
| [   20.163028][  T314] Modules linked in: ip_gre gre sch_ingress vrf veth
[   20.164048][  T314] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.164440][ T314] 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) 
[ 20.164773][ T314] 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
[   20.165945][  T314] RSP: 0018:ffffc900004c7000 EFLAGS: 00010246
[   20.166352][  T314] RAX: 0000000000000000 RBX: ffff88800a304000 RCX: 0000000000000001
[   20.166841][  T314] RDX: 0000000000000000 RSI: ffffffffa869b939 RDI: ffffffffa7e555e0
[   20.167305][  T314] RBP: ffffc900004c70e8 R08: ffff88800a304218 R09: 0000000000000000
[   20.167788][  T314] R10: ffffc900004c7118 R11: ffffffffa8b79160 R12: 1ffff92000098e04
[   20.168256][  T314] R13: 00000000000005b6 R14: ffffc900004c7118 R15: ffff88800a304218
[   20.168728][  T314] FS:  00007fe5e0a82800(0000) GS:ffff88808bc37000(0000) knlGS:0000000000000000
[   20.169272][  T314] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.169683][  T314] CR2: 00007f7e2ba03000 CR3: 0000000009382003 CR4: 0000000000772ef0
[   20.170155][  T314] PKRU: 55555554
[   20.170389][  T314] Call Trace:
[   20.170631][  T314]  <TASK>
[ 20.170796][ T314] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 20.171196][ T314] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.171512][ T314] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 20.172046][ T314] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 20.172373][ T314] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 20.172707][ T314] netif_set_mtu (net/core/dev.c:9652) 
[ 20.173024][ T314] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 20.173343][ T314] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 20.173663][ T314] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 20.173899][ T314] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 20.174208][ T314] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 20.174526][ T314] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 20.174851][ T314] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 20.175235][ T314] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 20.175551][ T314] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 20.175872][ T314] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 20.176182][ T314] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 20.176487][ T314] ? __dev_get_by_name (net/core/dev.c:865) 
[ 20.176826][ T314] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.177146][ T314] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.177458][ T314] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 20.177774][ T314] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.178090][ T314] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 20.178430][ T314] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 20.178756][ T314] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.179085][ T314] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 20.179398][ T314] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.179722][ T314] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.180046][ T314] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 20.180364][ T314] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.180950][ T314] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.181272][ T314] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 20.181592][ T314] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.181918][ T314] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 20.182247][ T314] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 20.182563][ T314] ? 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) 
[ 20.182892][ T314] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 20.183211][ T314] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 20.183521][ T314] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.183851][ T314] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 20.184167][ T314] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 20.184476][ T314] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 20.184822][ T314] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 20.185146][ T314] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 20.185453][ T314] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 20.185859][ T314] ___sys_sendmsg (net/socket.c:2670) 
[ 20.186175][ T314] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 20.186485][ T314] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 20.187724][ T314] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.188042][ T314] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 20.188382][ T314] ? __handle_mm_fault (mm/memory.c:6212) 
[ 20.205527][ T314] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 20.206015][ T314] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 20.206343][ T314] __sys_sendmsg (net/socket.c:2700) 
[ 20.206690][ T314] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 20.206996][ T314] ? 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) 
[ 20.207314][ T314] ? 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) 
[ 20.207635][ T314] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.207950][ T314] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.208285][ T314] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.208909][  T314] RIP: 0033:0x7fe5e0c4f1e7
[ 20.209252][ T314] Code: Unable to access opcode bytes at 0x7fe5e0c4f1bd.

Code starting with the faulting instruction
===========================================
[   20.209691][  T314] RSP: 002b:00007ffe2ff259d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.210159][  T314] RAX: ffffffffffffffda RBX: 00007ffe2ff26100 RCX: 00007fe5e0c4f1e7
[   20.210858][  T314] RDX: 0000000000000000 RSI: 00007ffe2ff25a40 RDI: 0000000000000005
[   20.211353][  T314] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   20.212051][  T314] R10: 00007fe5e0b476f8 R11: 0000000000000246 R12: 00007ffe2ff26120
[   20.213014][  T314] R13: 00000000686e701b R14: 0000000000499600 R15: 00007ffe2ff25b2c
| [   23.063752][  T343] ------------[ cut here ]------------
| [ 23.064092][ T343] WARNING: CPU: 2 PID: 343 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) 
| [   23.064867][  T343] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.066316][  T343] Tainted: [W]=WARN
[   23.066569][  T343] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.066976][ T343] 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) 
[ 23.067332][ T343] 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
[   23.068652][  T343] RSP: 0018:ffffc90000546ef0 EFLAGS: 00010246
[   23.069061][  T343] RAX: 0000000000000000 RBX: ffff88800b72a000 RCX: 0000000000000001
[   23.069541][  T343] RDX: 0000000000000000 RSI: ffffffffa869b939 RDI: ffffffffa7e555e0
[   23.070023][  T343] RBP: ffffc90000546fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.070490][  T343] R10: ffffc90000547010 R11: ffffffffa94a8918 R12: 1ffff920000a8de2
[   23.070972][  T343] R13: 00000000000005dc R14: ffffc90000547010 R15: ffff88800b72af08
[   23.071449][  T343] FS:  00007f454cbae800(0000) GS:ffff88808bbb7000(0000) knlGS:0000000000000000
[   23.072001][  T343] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.072399][  T343] CR2: 00000000004e5aa8 CR3: 000000000de32002 CR4: 0000000000772ef0
[   23.072891][  T343] PKRU: 55555554
[   23.073135][  T343] Call Trace:
[   23.073385][  T343]  <TASK>
[ 23.073557][ T343] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.073898][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.074228][ T343] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.074547][ T343] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.074952][ T343] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.075275][ T343] netif_set_mtu (net/core/dev.c:9652) 
[ 23.075595][ T343] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.075937][ T343] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.076379][ T343] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.076644][ T343] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.077070][ T343] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.077427][ T343] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 23.077764][ T343] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.078086][ T343] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.078501][ T343] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.078837][ T343] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.079153][ T343] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.079473][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.079810][ T343] ? __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) 
[ 23.080127][ T343] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.080518][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.080865][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.081186][ T343] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.081505][ T343] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.081836][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.082158][ T343] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.082473][ T343] ? __create_object (mm/kmemleak.c:771) 
[ 23.082813][ T343] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.083130][ T343] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.083464][ T343] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.083866][ T343] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.084192][ T343] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.084512][ T343] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.084850][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.085179][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.085497][ T343] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.085821][ T343] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.086152][ T343] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.086468][ T343] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.086797][ T343] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.087117][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.087440][ T343] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.087766][ T343] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.088086][ T343] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.088425][ T343] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.088762][ T343] ? 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) 
[ 23.089081][ T343] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 23.089406][ T343] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.089735][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.090060][ T343] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.090379][ T343] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.090716][ T343] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.091041][ T343] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.091363][ T343] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.091690][ T343] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.092093][ T343] ___sys_sendmsg (net/socket.c:2670) 
[ 23.092407][ T343] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.092747][ T343] ? __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) 
[ 23.093148][ T343] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.093471][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.093802][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.094129][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.094446][ T343] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 23.094778][ T343] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.095102][ T343] __sys_sendmsg (net/socket.c:2700) 
[ 23.095418][ T343] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.095827][ T343] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.096159][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.096476][ T343] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.096817][ T343] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.097211][  T343] RIP: 0033:0x7f454cd7b1e7
[ 23.097540][ T343] 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)
[   23.098671][  T343] RSP: 002b:00007ffdcac76388 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.099145][  T343] RAX: ffffffffffffffda RBX: 00007ffdcac76ab0 RCX: 00007f454cd7b1e7
[   23.099620][  T343] RDX: 0000000000000000 RSI: 00007ffdcac763f0 RDI: 0000000000000005
[   23.100091][  T343] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.100560][  T343] R10: 0000000011e66910 R11: 0000000000000246 R12: 0000000000000004
[   23.101044][  T343] R13: 00000000686e701e R14: 0000000000499600 R15: 0000000000000000
| [   23.329485][  T345] ------------[ cut here ]------------
| [ 23.329852][ T345] WARNING: CPU: 2 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) 
| [   23.330470][  T345] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.332467][  T345] Tainted: [W]=WARN
[   23.332948][  T345] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.333509][ 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) 
[ 23.333911][ 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
[   23.335018][  T345] RSP: 0018:ffffc90000656ef0 EFLAGS: 00010246
[   23.335419][  T345] RAX: 0000000000000000 RBX: ffff88800b72a000 RCX: 0000000000000001
[   23.335896][  T345] RDX: 0000000000000000 RSI: ffffffffa869b939 RDI: ffffffffa7e555e0
[   23.336361][  T345] RBP: ffffc90000656fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.336845][  T345] R10: ffffc90000657010 R11: ffffffffa94a8918 R12: 1ffff920000cade2
[   23.337310][  T345] R13: 00000000000005dc R14: ffffc90000657010 R15: ffff88800b72af08
[   23.337787][  T345] FS:  00007f8fa5011800(0000) GS:ffff88808bbb7000(0000) knlGS:0000000000000000
[   23.338355][  T345] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.338763][  T345] CR2: 00000000004e5ab0 CR3: 000000000a32c006 CR4: 0000000000772ef0
[   23.339234][  T345] PKRU: 55555554
[   23.339475][  T345] Call Trace:
[   23.339743][  T345]  <TASK>
[ 23.339914][ T345] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.340236][ T345] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.340560][ T345] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.340890][ T345] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.341282][ T345] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.341602][ T345] netif_set_mtu (net/core/dev.c:9652) 
[ 23.341931][ T345] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.342268][ T345] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.342710][ T345] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.342958][ T345] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.343386][ T345] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.343753][ T345] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 23.344075][ T345] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.344398][ T345] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.344806][ T345] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.345125][ T345] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.345438][ T345] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.345779][ T345] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.346102][ T345] ? __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) 
[ 23.346424][ T345] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.346822][ T345] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.347142][ T345] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.347455][ T345] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.347780][ T345] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.348102][ T345] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.348424][ T345] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.348750][ T345] ? __create_object (mm/kmemleak.c:771) 
[ 23.349069][ T345] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.349387][ T345] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.349715][ T345] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.350110][ T345] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.350444][ T345] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.350773][ T345] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.351089][ T345] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.351412][ T345] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.351737][ T345] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.352050][ T345] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.352371][ T345] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.352697][ T345] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.353023][ T345] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.353350][ T345] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.353682][ T345] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.354005][ T345] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.354321][ T345] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.354658][ T345] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.354972][ 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) 
[ 23.355295][ T345] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 23.355622][ T345] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.355938][ T345] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.356258][ T345] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.356579][ T345] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.356905][ T345] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.357234][ T345] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.357552][ T345] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.357884][ T345] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.358296][ T345] ___sys_sendmsg (net/socket.c:2670) 
[ 23.358619][ T345] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.358934][ T345] ? __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) 
[ 23.359325][ T345] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.359652][ T345] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.359981][ T345] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.360301][ T345] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.360626][ T345] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 23.360943][ T345] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.361267][ T345] __sys_sendmsg (net/socket.c:2700) 
[ 23.361585][ T345] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.361987][ T345] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.362314][ T345] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.362647][ T345] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.362965][ T345] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.363353][  T345] RIP: 0033:0x7f8fa51de1e7
[ 23.363688][ 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)
[   23.364795][  T345] RSP: 002b:00007ffddbbbe9e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.365267][  T345] RAX: ffffffffffffffda RBX: 00007ffddbbbf110 RCX: 00007f8fa51de1e7
[   23.365746][  T345] RDX: 0000000000000000 RSI: 00007ffddbbbea50 RDI: 0000000000000005
[   23.366219][  T345] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.366699][  T345] R10: 0000000019720910 R11: 0000000000000246 R12: 0000000000000004
[   23.367168][  T345] R13: 00000000686e701f R14: 0000000000499600 R15: 0000000000000000
| [   23.736345][  T348] ------------[ cut here ]------------
| [ 23.736777][ T348] WARNING: CPU: 0 PID: 348 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) 
| [   23.737384][  T348] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.738796][  T348] Tainted: [W]=WARN
[   23.739028][  T348] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.739410][ T348] 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) 
[ 23.739735][ T348] 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
[   23.740829][  T348] RSP: 0018:ffffc90000537000 EFLAGS: 00010246
[   23.741213][  T348] RAX: 0000000000000000 RBX: ffff88800a4a4000 RCX: 0000000000000001
[   23.741680][  T348] RDX: 0000000000000000 RSI: ffffffffa869b939 RDI: ffffffffa7e555e0
[   23.742139][  T348] RBP: ffffc900005370e8 R08: ffff88800a4a4218 R09: 0000000000000000
[   23.742600][  T348] R10: ffffc90000537118 R11: ffffffffa8b79160 R12: 1ffff920000a6e04
[   23.743065][  T348] R13: 00000000000005b6 R14: ffffc90000537118 R15: ffff88800a4a4218
[   23.743522][  T348] FS:  00007f95fdf81800(0000) GS:ffff88808bab7000(0000) knlGS:0000000000000000
[   23.744063][  T348] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.744449][  T348] CR2: 00007f95fe081130 CR3: 000000000e511002 CR4: 0000000000772ef0
[   23.744923][  T348] PKRU: 55555554
[   23.745152][  T348] Call Trace:
[   23.745379][  T348]  <TASK>
[ 23.745535][ T348] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 23.745925][ T348] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.746238][ T348] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.746547][ T348] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 23.746870][ T348] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.747185][ T348] netif_set_mtu (net/core/dev.c:9652) 
[ 23.747492][ T348] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.747821][ T348] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 23.748131][ T348] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.748403][ T348] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 23.748745][ T348] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 23.749067][ T348] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 23.749384][ T348] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 23.749780][ T348] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 23.750099][ T348] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 23.750411][ T348] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 23.750729][ T348] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 23.751036][ T348] ? __dev_get_by_name (net/core/dev.c:865) 
[ 23.751350][ T348] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.751667][ T348] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.751981][ T348] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.752285][ T348] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.752598][ T348] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 23.752921][ T348] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.753234][ T348] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.753552][ T348] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.753870][ T348] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.754179][ T348] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.754483][ T348] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.754796][ T348] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.755105][ T348] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.755417][ T348] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.755732][ T348] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.756039][ T348] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.756386][ T348] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.756701][ T348] ? 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) 
[ 23.757009][ T348] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 23.757317][ T348] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.757627][ T348] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.757937][ T348] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.758291][ T348] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.758607][ T348] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.758931][ T348] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.759241][ T348] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.759544][ T348] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.759944][ T348] ___sys_sendmsg (net/socket.c:2670) 
[ 23.760249][ T348] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.760551][ T348] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 23.760876][ T348] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.761178][ T348] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 23.761485][ T348] ? __handle_mm_fault (mm/memory.c:6212) 
[ 23.761795][ T348] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 23.762097][ T348] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 23.762417][ T348] __sys_sendmsg (net/socket.c:2700) 
[ 23.762733][ T348] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.763041][ T348] ? 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) 
[ 23.763362][ T348] ? 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) 
[ 23.763678][ T348] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.763987][ T348] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.764292][ T348] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.764690][  T348] RIP: 0033:0x7f95fe14e1e7
[ 23.765012][ T348] 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)
[   23.766102][  T348] RSP: 002b:00007ffd5bf20e58 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.766568][  T348] RAX: ffffffffffffffda RBX: 00007ffd5bf21580 RCX: 00007f95fe14e1e7
[   23.767036][  T348] RDX: 0000000000000000 RSI: 00007ffd5bf20ec0 RDI: 0000000000000005
[   23.767493][  T348] RBP: 0000000000000008 R08: 00000000000000ac R09: 0000000000000000
[   23.767954][  T348] R10: 00007f95fe0466f8 R11: 0000000000000246 R12: 00007ffd5bf215a0


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