======================================
| [   19.560534][  T317] ip_gre: GRE over IPv4 tunneling driver
| [   19.610356][  T316] ------------[ cut here ]------------
| [ 19.610800][ T316] WARNING: CPU: 1 PID: 316 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   19.611421][  T316] Modules linked in: ip_gre gre sch_ingress vrf veth
[   19.612586][  T316] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.612984][ T316] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 19.613354][ T316] 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
[   19.614481][  T316] RSP: 0018:ffffc900005c7000 EFLAGS: 00010246
[   19.614881][  T316] RAX: 0000000000000000 RBX: ffff8880090cc000 RCX: 0000000000000001
[   19.615344][  T316] RDX: 0000000000000000 RSI: ffffffff9d29b939 RDI: ffffffff9ca555e0
[   19.615963][  T316] RBP: ffffc900005c70e8 R08: ffff8880090cc218 R09: 0000000000000000
[   19.616427][  T316] R10: ffffc900005c7118 R11: ffffffff9d779160 R12: 1ffff920000b8e04
[   19.617035][  T316] R13: 00000000000005b6 R14: ffffc900005c7118 R15: ffff8880090cc218
[   19.617493][  T316] FS:  00007fae7ae18800(0000) GS:ffff888096f37000(0000) knlGS:0000000000000000
[   19.618166][  T316] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.618562][  T316] CR2: 00007f4aaf347000 CR3: 000000000ddb3001 CR4: 0000000000772ef0
[   19.619215][  T316] PKRU: 55555554
[   19.619455][  T316] Call Trace:
[   19.619686][  T316]  <TASK>
[ 19.620066][ T316] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 19.620457][ T316] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.620968][ T316] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.621286][ T316] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 19.621596][ T316] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.622212][ T316] netif_set_mtu (net/core/dev.c:9652) 
[ 19.622530][ T316] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.623065][ T316] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 19.623373][ T316] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.623605][ T316] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 19.624122][ T316] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 19.624444][ T316] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 19.624756][ T316] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 19.625339][ T316] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 19.625654][ T316] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 19.626176][ T316] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 19.626486][ T316] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 19.626991][ T316] ? __dev_get_by_name (net/core/dev.c:865) 
[ 19.627302][ T316] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 19.627608][ T316] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 19.628176][ T316] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.628484][ T316] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 19.628993][ T316] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 19.629322][ T316] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.629636][ T316] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.630179][ T316] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.630485][ T316] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.631354][ T316] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.631660][ T316] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.632244][ T316] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.632553][ T316] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.633173][ T316] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.633481][ T316] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.634073][ T316] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.634395][ T316] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.634698][ T316] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 19.635290][ T316] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 19.635601][ T316] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.636185][ T316] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.636498][ T316] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.637097][ T316] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.637406][ T316] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.637719][ T316] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.638311][ T316] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.638617][ T316] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.639272][ T316] ___sys_sendmsg (net/socket.c:2670) 
[ 19.639583][ T316] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.640089][ T316] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 19.640424][ T316] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 19.640727][ T316] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 19.641214][ T316] ? __handle_mm_fault (mm/memory.c:6212) 
[ 19.641517][ T316] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 19.642021][ T316] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 19.642342][ T316] __sys_sendmsg (net/socket.c:2700) 
[ 19.642650][ T316] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.643146][ T316] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 19.643460][ T316] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 19.643945][ T316] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.644252][ T316] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.644555][ T316] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.645159][  T316] RIP: 0033:0x7fae7afe51e7
[ 19.645623][ T316] Code: Unable to access opcode bytes at 0x7fae7afe51bd.

Code starting with the faulting instruction
===========================================
[   19.646030][  T316] RSP: 002b:00007ffea07ef638 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.646492][  T316] RAX: ffffffffffffffda RBX: 00007ffea07efd60 RCX: 00007fae7afe51e7
[   19.646959][  T316] RDX: 0000000000000000 RSI: 00007ffea07ef6a0 RDI: 0000000000000005
[   19.647414][  T316] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   19.647897][  T316] R10: 00007fae7aedd6f8 R11: 0000000000000246 R12: 00007ffea07efd80
[   19.648351][  T316] R13: 00000000686e74c2 R14: 0000000000499600 R15: 00007ffea07ef78c
| [   22.353583][  T344] ------------[ cut here ]------------
| [ 22.353948][ T344] WARNING: CPU: 2 PID: 344 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   22.354568][  T344] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   22.356800][  T344] Tainted: [W]=WARN
[   22.357050][  T344] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 22.357447][ T344] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 22.357792][ T344] Code: 00 00 8b 05 b7 bb 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 fa 61 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 b7 bb 3a 02    	mov    0x23abbb7(%rip),%eax        # 0x23abbbf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa 61 7b 00       	call   0x7b621b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   22.358927][  T344] RSP: 0018:ffffc90000556ef0 EFLAGS: 00010246
[   22.359342][  T344] RAX: 0000000000000000 RBX: ffff88800abe2000 RCX: 0000000000000001
[   22.359827][  T344] RDX: 0000000000000000 RSI: ffffffff9d29b939 RDI: ffffffff9ca555e0
[   22.360303][  T344] RBP: ffffc90000556fe0 R08: 0000000000000000 R09: 0000000000000000
[   22.360792][  T344] R10: ffffc90000557010 R11: ffffffff9e0a8918 R12: 1ffff920000aade2
[   22.361460][  T344] R13: 00000000000005dc R14: ffffc90000557010 R15: ffff88800abe2f08
[   22.361962][  T344] FS:  00007f92f892c800(0000) GS:ffff888096fb7000(0000) knlGS:0000000000000000
[   22.362523][  T344] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.362935][  T344] CR2: 00000000004e5aa8 CR3: 000000000e47d005 CR4: 0000000000772ef0
[   22.363410][  T344] PKRU: 55555554
[   22.363652][  T344] Call Trace:
[   22.363911][  T344]  <TASK>
[ 22.364084][ T344] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 22.364407][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.364732][ T344] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 22.365068][ T344] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 22.365466][ T344] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 22.365805][ T344] netif_set_mtu (net/core/dev.c:9652) 
[ 22.366132][ T344] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 22.366466][ T344] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 22.366921][ T344] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 22.367170][ T344] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 22.367609][ T344] br_add_if (net/bridge/br_if.c:697) bridge 
[ 22.367989][ T344] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 22.368315][ T344] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 22.368641][ T344] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 22.369067][ T344] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 22.369659][ T344] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 22.370221][ T344] ? __kernel_text_address (kernel/extable.c:79) 
[ 22.370547][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.370880][ T344] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113) 
[ 22.371425][ T344] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 22.371828][ T344] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.372153][ T344] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.372467][ T344] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 22.373022][ T344] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 22.373341][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.373662][ T344] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 22.373986][ T344] ? __create_object (mm/kmemleak.c:771) 
[ 22.374530][ T344] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 22.374857][ T344] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 22.375174][ T344] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 22.375565][ T344] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 22.376133][ T344] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 22.376458][ T344] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.376791][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.377119][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.377665][ T344] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 22.377993][ T344] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.378321][ T344] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.378640][ T344] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 22.379220][ T344] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.379544][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.379881][ T344] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 22.380202][ T344] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.380747][ T344] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 22.381092][ T344] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 22.381410][ T344] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 22.381743][ T344] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 22.382079][ T344] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 22.382399][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.382727][ T344] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 22.383302][ T344] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 22.383623][ T344] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 22.383959][ T344] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 22.384292][ T344] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 22.384615][ T344] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 22.385256][ T344] ___sys_sendmsg (net/socket.c:2670) 
[ 22.385576][ T344] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 22.385903][ T344] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3096) 
[ 22.386522][ T344] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 22.386853][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.387188][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.387513][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.388079][ T344] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 22.388401][ T344] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.388729][ T344] __sys_sendmsg (net/socket.c:2700) 
[ 22.389057][ T344] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 22.389683][ T344] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 22.390032][ T344] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.390351][ T344] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 22.390672][ T344] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   22.391077][  T344] RIP: 0033:0x7f92f8af91e7
[ 22.391404][ T344] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   22.392520][  T344] RSP: 002b:00007fff46734598 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   22.393005][  T344] RAX: ffffffffffffffda RBX: 00007fff46734cc0 RCX: 00007f92f8af91e7
[   22.393705][  T344] RDX: 0000000000000000 RSI: 00007fff46734600 RDI: 0000000000000005
[   22.394187][  T344] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   22.394665][  T344] R10: 000000000600a910 R11: 0000000000000246 R12: 0000000000000004
[   22.395375][  T344] R13: 00000000686e74c5 R14: 0000000000499600 R15: 0000000000000000
| [   22.620628][  T347] ------------[ cut here ]------------
| [ 22.620954][ T347] WARNING: CPU: 3 PID: 347 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   22.621553][  T347] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   22.623580][  T347] Tainted: [W]=WARN
[   22.623817][  T347] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 22.624197][ T347] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 22.624518][ T347] Code: 00 00 8b 05 b7 bb 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 fa 61 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 b7 bb 3a 02    	mov    0x23abbb7(%rip),%eax        # 0x23abbbf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa 61 7b 00       	call   0x7b621b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   22.625624][  T347] RSP: 0018:ffffc900004f6ef0 EFLAGS: 00010246
[   22.626021][  T347] RAX: 0000000000000000 RBX: ffff88800abe2000 RCX: 0000000000000001
[   22.626475][  T347] RDX: 0000000000000000 RSI: ffffffff9d29b939 RDI: ffffffff9ca555e0
[   22.626942][  T347] RBP: ffffc900004f6fe0 R08: 0000000000000000 R09: 0000000000000000
[   22.627394][  T347] R10: ffffc900004f7010 R11: ffffffff9e0a8918 R12: 1ffff9200009ede2
[   22.627899][  T347] R13: 00000000000005dc R14: ffffc900004f7010 R15: ffff88800abe2f08
[   22.628357][  T347] FS:  00007fcb79436800(0000) GS:ffff888097037000(0000) knlGS:0000000000000000
[   22.628909][  T347] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.629307][  T347] CR2: 00000000004e5ab0 CR3: 0000000004c47004 CR4: 0000000000772ef0
[   22.629778][  T347] PKRU: 55555554
[   22.630012][  T347] Call Trace:
[   22.630242][  T347]  <TASK>
[ 22.630400][ T347] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 22.630712][ T347] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.631034][ T347] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 22.631341][ T347] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 22.631720][ T347] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 22.632034][ T347] netif_set_mtu (net/core/dev.c:9652) 
[ 22.632340][ T347] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 22.632654][ T347] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 22.633103][ T347] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 22.633336][ T347] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 22.633754][ T347] br_add_if (net/bridge/br_if.c:697) bridge 
[ 22.634121][ T347] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 22.634430][ T347] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 22.634739][ T347] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 22.635134][ T347] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 22.635450][ T347] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 22.635751][ T347] ? __kernel_text_address (kernel/extable.c:79) 
[ 22.636066][ T347] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.636376][ T347] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113) 
[ 22.636679][ T347] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 22.637075][ T347] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.637384][ T347] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.637695][ T347] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 22.638009][ T347] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 22.638314][ T347] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.638618][ T347] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 22.638930][ T347] ? __create_object (mm/kmemleak.c:771) 
[ 22.639249][ T347] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 22.639555][ T347] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 22.639866][ T347] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 22.640254][ T347] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 22.640566][ T347] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 22.640897][ T347] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.641201][ T347] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.641512][ T347] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.641826][ T347] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 22.642127][ T347] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.642441][ T347] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.642745][ T347] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 22.643062][ T347] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.643372][ T347] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.643682][ T347] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 22.643992][ T347] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.644298][ T347] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 22.644615][ T347] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 22.644942][ T347] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 22.645250][ T347] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 22.645557][ T347] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 22.645870][ T347] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.646182][ T347] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 22.646492][ T347] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 22.646806][ T347] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 22.647126][ T347] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 22.647434][ T347] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 22.647739][ T347] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 22.648139][ T347] ___sys_sendmsg (net/socket.c:2670) 
[ 22.648440][ T347] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 22.648743][ T347] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3096) 
[ 22.649139][ T347] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 22.649465][ T347] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.649805][ T347] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.650117][ T347] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.650420][ T347] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 22.650723][ T347] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.651051][ T347] __sys_sendmsg (net/socket.c:2700) 
[ 22.651358][ T347] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 22.651737][ T347] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 22.652062][ T347] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.652368][ T347] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 22.652677][ T347] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   22.653070][  T347] RIP: 0033:0x7fcb796031e7
[ 22.653385][ T347] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   22.654478][  T347] RSP: 002b:00007ffc28060478 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   22.654945][  T347] RAX: ffffffffffffffda RBX: 00007ffc28060ba0 RCX: 00007fcb796031e7
[   22.655401][  T347] RDX: 0000000000000000 RSI: 00007ffc280604e0 RDI: 0000000000000005
[   22.655872][  T347] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   22.656328][  T347] R10: 0000000024d3e910 R11: 0000000000000246 R12: 0000000000000004
[   22.656802][  T347] R13: 00000000686e74c5 R14: 0000000000499600 R15: 0000000000000000
| [   23.059615][  T350] ------------[ cut here ]------------
| [ 23.060019][ T350] WARNING: CPU: 2 PID: 350 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   23.060739][  T350] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.062143][  T350] Tainted: [W]=WARN
[   23.062395][  T350] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.062800][ T350] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 23.063136][ T350] 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
[   23.064267][  T350] RSP: 0018:ffffc900005c7000 EFLAGS: 00010246
[   23.064676][  T350] RAX: 0000000000000000 RBX: ffff88800dd7c000 RCX: 0000000000000001
[   23.065153][  T350] RDX: 0000000000000000 RSI: ffffffff9d29b939 RDI: ffffffff9ca555e0
[   23.065620][  T350] RBP: ffffc900005c70e8 R08: ffff88800dd7c218 R09: 0000000000000000
[   23.066096][  T350] R10: ffffc900005c7118 R11: ffffffff9d779160 R12: 1ffff920000b8e04
[   23.066566][  T350] R13: 00000000000005b6 R14: ffffc900005c7118 R15: ffff88800dd7c218
[   23.067050][  T350] FS:  00007fa37eb3f800(0000) GS:ffff888096fb7000(0000) knlGS:0000000000000000
[   23.067593][  T350] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.067997][  T350] CR2: 0000000000436890 CR3: 000000000a72b006 CR4: 0000000000772ef0
[   23.068463][  T350] PKRU: 55555554
[   23.068705][  T350] Call Trace:
[   23.068972][  T350]  <TASK>
[ 23.069142][ T350] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 23.069548][ T350] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.069879][ T350] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.070199][ T350] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 23.070516][ T350] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.070848][ T350] netif_set_mtu (net/core/dev.c:9652) 
[ 23.071166][ T350] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.071499][ T350] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 23.071829][ T350] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.072073][ T350] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 23.072390][ T350] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 23.072715][ T350] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 23.073054][ T350] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 23.073450][ T350] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 23.073791][ T350] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 23.074116][ T350] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 23.074436][ T350] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 23.074797][ T350] ? __dev_get_by_name (net/core/dev.c:865) 
[ 23.075122][ T350] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.075444][ T350] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.075778][ T350] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.076105][ T350] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.076430][ T350] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 23.076761][ T350] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.077099][ T350] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.077431][ T350] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.077744][ T350] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.078078][ T350] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.078396][ T350] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.078719][ T350] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.079051][ T350] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.079391][ T350] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.079708][ T350] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.080039][ T350] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.080369][ T350] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.080688][ T350] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 23.081023][ T350] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 23.081347][ T350] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.081663][ T350] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.081999][ T350] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.082321][ T350] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.082639][ T350] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.082976][ T350] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.083300][ T350] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.083617][ T350] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.084039][ T350] ___sys_sendmsg (net/socket.c:2670) 
[ 23.084359][ T350] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.084673][ T350] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 23.085005][ T350] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.085321][ T350] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 23.085647][ T350] ? __handle_mm_fault (mm/memory.c:6212) 
[ 23.085974][ T350] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 23.086290][ T350] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 23.086625][ T350] __sys_sendmsg (net/socket.c:2700) 
[ 23.086954][ T350] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.087270][ T350] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 23.087599][ T350] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 23.087932][ T350] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.088254][ T350] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.088569][ T350] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.088969][  T350] RIP: 0033:0x7fa37ed0c1e7
[ 23.089309][ T350] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   23.090425][  T350] RSP: 002b:00007ffce12d67a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.090911][  T350] RAX: ffffffffffffffda RBX: 00007ffce12d6ed0 RCX: 00007fa37ed0c1e7
[   23.091382][  T350] RDX: 0000000000000000 RSI: 00007ffce12d6810 RDI: 0000000000000005
[   23.091866][  T350] RBP: 0000000000000008 R08: 00000000000000ac R09: 0000000000000000
[   23.092340][  T350] R10: 00007fa37ec046f8 R11: 0000000000000246 R12: 00007ffce12d6ef0


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