======================================
| [   19.844027][  T314] ip_gre: GRE over IPv4 tunneling driver
| [   19.916664][  T313] ------------[ cut here ]------------
| [ 19.917144][ T313] WARNING: CPU: 0 PID: 313 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) 
| [   19.917892][  T313] Modules linked in: ip_gre gre sch_ingress vrf veth
[   19.918930][  T313] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.919324][ T313] 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) 
[ 19.919656][ T313] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 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 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   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 1a 63 7b 00       	call   0x7b633b
  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
[   19.920844][  T313] RSP: 0018:ffffc900005c7000 EFLAGS: 00010246
[   19.921251][  T313] RAX: 0000000000000000 RBX: ffff888008b8c000 RCX: 0000000000000001
[   19.921767][  T313] RDX: 0000000000000000 RSI: ffffffff8a89b941 RDI: ffffffff8a0555e0
[   19.922253][  T313] RBP: ffffc900005c70e8 R08: ffff888008b8c218 R09: 0000000000000000
[   19.922773][  T313] R10: ffffc900005c7118 R11: ffffffff8ad79160 R12: 1ffff920000b8e04
[   19.923248][  T313] R13: 00000000000005b6 R14: ffffc900005c7118 R15: ffff888008b8c218
[   19.923729][  T313] FS:  00007f176b3ed800(0000) GS:ffff8880a98b7000(0000) knlGS:0000000000000000
[   19.924587][  T313] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.924991][  T313] CR2: 00007fa6ee5a4198 CR3: 000000001fa2c005 CR4: 0000000000772ef0
[   19.925487][  T313] PKRU: 55555554
[   19.925725][  T313] Call Trace:
[   19.925964][  T313]  <TASK>
[ 19.926131][ T313] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 19.926539][ T313] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.926859][ T313] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.927178][ T313] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 19.927509][ T313] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.927832][ T313] netif_set_mtu (net/core/dev.c:9652) 
[ 19.928150][ T313] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.928481][ T313] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 19.928799][ T313] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.929040][ T313] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 19.929366][ T313] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 19.929704][ T313] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 19.930035][ T313] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 19.930450][ T313] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 19.930776][ T313] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 19.931089][ T313] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 19.931422][ T313] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 19.931748][ T313] ? __dev_get_by_name (net/core/dev.c:865) 
[ 19.932069][ T313] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 19.932409][ T313] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 19.932736][ T313] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.937742][ T313] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 19.938069][ T313] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 19.938478][ T313] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.938798][ T313] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.939121][ T313] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.939440][ T313] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.939752][ T313] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.940059][ T313] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.940378][ T313] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.940706][ T313] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.941017][ T313] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.941332][ T313] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.941666][ T313] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.942000][ T313] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.942304][ T313] ? 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) 
[ 19.942640][ T313] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 19.942962][ T313] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.943273][ T313] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.943601][ T313] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.943917][ T313] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.944247][ T313] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.945019][ T313] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.945336][ T313] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.947989][ T313] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.948414][ T313] ___sys_sendmsg (net/socket.c:2670) 
[ 19.948727][ T313] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.949272][ T313] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 19.949609][ T313] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 19.949941][ T313] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 19.950256][ T313] ? __handle_mm_fault (mm/memory.c:6212) 
[ 19.950573][ T313] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 19.950880][ T313] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 19.951225][ T313] __sys_sendmsg (net/socket.c:2700) 
[ 19.951579][ T313] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.951892][ T313] ? 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) 
[ 19.952213][ T313] ? 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) 
[ 19.952549][ T313] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.952864][ T313] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.953176][ T313] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.953574][  T313] RIP: 0033:0x7f176b5ba1e7
[ 19.953915][ T313] Code: Unable to access opcode bytes at 0x7f176b5ba1bd.

Code starting with the faulting instruction
===========================================
[   19.954318][  T313] RSP: 002b:00007ffd434121a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.954804][  T313] RAX: ffffffffffffffda RBX: 00007ffd434128d0 RCX: 00007f176b5ba1e7
[   19.955280][  T313] RDX: 0000000000000000 RSI: 00007ffd43412210 RDI: 0000000000000005
[   19.955994][  T313] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   19.956701][  T313] R10: 00007f176b4b26f8 R11: 0000000000000246 R12: 00007ffd434128f0
[   19.957423][  T313] R13: 00000000686e10ed R14: 0000000000499600 R15: 00007ffd434122fc
| [   23.006335][  T340] ------------[ cut here ]------------
| [ 23.006687][ T340] WARNING: CPU: 3 PID: 340 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   23.007303][  T340] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.008851][  T340] Tainted: [W]=WARN
[   23.009097][  T340] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.009532][ T340] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 23.009882][ T340] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 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 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   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 1a 63 7b 00       	call   0x7b633b
  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
[   23.010987][  T340] RSP: 0018:ffffc900005d6ef0 EFLAGS: 00010246
[   23.011376][  T340] RAX: 0000000000000000 RBX: ffff88800f032000 RCX: 0000000000000001
[   23.011862][  T340] RDX: 0000000000000000 RSI: ffffffff8a89b941 RDI: ffffffff8a0555e0
[   23.012330][  T340] RBP: ffffc900005d6fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.012798][  T340] R10: ffffc900005d7010 R11: ffffffff8b6a8918 R12: 1ffff920000bade2
[   23.013259][  T340] R13: 00000000000005dc R14: ffffc900005d7010 R15: ffff88800f032f08
[   23.013731][  T340] FS:  00007f38853cd800(0000) GS:ffff8880a9a37000(0000) knlGS:0000000000000000
[   23.014276][  T340] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.014673][  T340] CR2: 00000000004e5aa8 CR3: 000000000c763002 CR4: 0000000000772ef0
[   23.015137][  T340] PKRU: 55555554
[   23.015370][  T340] Call Trace:
[   23.015609][  T340]  <TASK>
[ 23.015772][ T340] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.016084][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.016430][ T340] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.016742][ T340] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.017127][ T340] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.017447][ T340] netif_set_mtu (net/core/dev.c:9652) 
[ 23.017760][ T340] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.018082][ T340] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.018532][ T340] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.018767][ T340] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.019183][ T340] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.019541][ T340] do_set_master (net/core/rtnetlink.c:2948) 
[ 23.019857][ T340] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.020169][ T340] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.020568][ T340] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.020883][ T340] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.021188][ T340] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.021509][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.021836][ T340] ? __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) 
[ 23.022147][ T340] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.022539][ T340] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.022853][ T340] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.023171][ T340] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.023488][ T340] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.023801][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.024109][ T340] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.024420][ T340] ? __create_object (mm/kmemleak.c:771) 
[ 23.024741][ T340] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.025053][ T340] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.025361][ T340] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.025759][ T340] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.026075][ T340] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.026397][ T340] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.026705][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.027018][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.027328][ T340] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.027642][ T340] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.027961][ T340] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.028268][ T340] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.028588][ T340] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.028901][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.029212][ T340] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.029537][ T340] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.029847][ T340] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.030164][ T340] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.030490][ T340] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 23.030800][ T340] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.031114][ T340] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.031430][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.031753][ T340] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.032066][ T340] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.032375][ T340] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.032712][ T340] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.033025][ T340] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.033328][ T340] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.033734][ T340] ___sys_sendmsg (net/socket.c:2670) 
[ 23.034040][ T340] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.034347][ T340] ? __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) 
[ 23.034741][ T340] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.035059][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.035370][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.035696][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.036008][ T340] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 23.036314][ T340] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.036640][ T340] __sys_sendmsg (net/socket.c:2700) 
[ 23.036947][ T340] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.037332][ T340] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.037658][ T340] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.037971][ T340] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.038282][ T340] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.038674][  T340] RIP: 0033:0x7f388559a1e7
[ 23.038997][ T340] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   23.040144][  T340] RSP: 002b:00007ffc3475f7f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.040621][  T340] RAX: ffffffffffffffda RBX: 00007ffc3475ff20 RCX: 00007f388559a1e7
[   23.041081][  T340] RDX: 0000000000000000 RSI: 00007ffc3475f860 RDI: 0000000000000005
[   23.041569][  T340] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.042045][  T340] R10: 000000000d2e1910 R11: 0000000000000246 R12: 0000000000000004
[   23.042522][  T340] R13: 00000000686e10f0 R14: 0000000000499600 R15: 0000000000000000
| [   23.313610][  T343] ------------[ cut here ]------------
| [ 23.313967][ 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) 
| [   23.314622][  T343] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.316028][  T343] Tainted: [W]=WARN
[   23.316274][  T343] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.316693][ 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) 
[ 23.317040][ T343] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 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 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   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 1a 63 7b 00       	call   0x7b633b
  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
[   23.318159][  T343] RSP: 0018:ffffc900005a6ef0 EFLAGS: 00010246
[   23.318573][  T343] RAX: 0000000000000000 RBX: ffff88800f032000 RCX: 0000000000000001
[   23.319055][  T343] RDX: 0000000000000000 RSI: ffffffff8a89b941 RDI: ffffffff8a0555e0
[   23.319543][  T343] RBP: ffffc900005a6fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.320028][  T343] R10: ffffc900005a7010 R11: ffffffff8b6a8918 R12: 1ffff920000b4de2
[   23.320643][  T343] R13: 00000000000005dc R14: ffffc900005a7010 R15: ffff88800f032f08
[   23.321118][  T343] FS:  00007f3cb2449800(0000) GS:ffff8880a99b7000(0000) knlGS:0000000000000000
[   23.321706][  T343] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.322113][  T343] CR2: 00000000004e5ab0 CR3: 0000000010494005 CR4: 0000000000772ef0
[   23.322612][  T343] PKRU: 55555554
[   23.322857][  T343] Call Trace:
[   23.323099][  T343]  <TASK>
[ 23.323273][ T343] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.323626][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.323958][ T343] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.324283][ T343] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.324690][ T343] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.325023][ T343] netif_set_mtu (net/core/dev.c:9652) 
[ 23.325345][ T343] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.325695][ T343] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.326156][ T343] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.326427][ T343] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.326877][ T343] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.327251][ T343] do_set_master (net/core/rtnetlink.c:2948) 
[ 23.327615][ T343] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.327951][ T343] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.328356][ T343] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.328699][ T343] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.329017][ T343] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.329343][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.329675][ 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) 
[ 23.329998][ T343] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.330400][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.330726][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.331048][ T343] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.331373][ T343] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.331753][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.332080][ T343] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.332423][ T343] ? __create_object (mm/kmemleak.c:771) 
[ 23.332754][ T343] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.333079][ T343] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.333430][ T343] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.333841][ T343] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.334169][ T343] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.334507][ T343] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.334828][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.335153][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.335496][ T343] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.335816][ T343] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.336162][ T343] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.336493][ T343] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.336814][ T343] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.337134][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.337471][ T343] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.337806][ T343] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.338126][ T343] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.338479][ T343] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.338808][ 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) 
[ 23.339143][ T343] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.339495][ T343] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.339822][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.340150][ T343] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.340514][ T343] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.340853][ T343] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.341182][ T343] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.341558][ T343] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.341878][ T343] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.342341][ T343] ___sys_sendmsg (net/socket.c:2670) 
[ 23.342696][ T343] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.343025][ 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) 
[ 23.343475][ T343] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.343817][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.344142][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.344482][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.344814][ 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) 
[ 23.345139][ T343] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.345480][ T343] __sys_sendmsg (net/socket.c:2700) 
[ 23.345835][ T343] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.346250][ T343] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.346597][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.346916][ T343] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.347270][ T343] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.347701][  T343] RIP: 0033:0x7f3cb26161e7
[ 23.348038][ 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)
[   23.349194][  T343] RSP: 002b:00007fffbae5d668 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.349680][  T343] RAX: ffffffffffffffda RBX: 00007fffbae5dd90 RCX: 00007f3cb26161e7
[   23.350157][  T343] RDX: 0000000000000000 RSI: 00007fffbae5d6d0 RDI: 0000000000000005
[   23.350651][  T343] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.351116][  T343] R10: 0000000029c15910 R11: 0000000000000246 R12: 0000000000000004
[   23.351626][  T343] R13: 00000000686e10f1 R14: 0000000000499600 R15: 0000000000000000
| [   23.790868][  T346] ------------[ cut here ]------------
| [ 23.791282][ T346] WARNING: CPU: 2 PID: 346 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) 
| [   23.791955][  T346] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.793417][  T346] Tainted: [W]=WARN
[   23.793668][  T346] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.794087][ T346] 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) 
[ 23.794442][ T346] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 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 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   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 1a 63 7b 00       	call   0x7b633b
  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
[   23.795576][  T346] RSP: 0018:ffffc900005b7000 EFLAGS: 00010246
[   23.795996][  T346] RAX: 0000000000000000 RBX: ffff888008a19000 RCX: 0000000000000001
[   23.796521][  T346] RDX: 0000000000000000 RSI: ffffffff8a89b941 RDI: ffffffff8a0555e0
[   23.797014][  T346] RBP: ffffc900005b70e8 R08: ffff888008a19218 R09: 0000000000000000
[   23.797502][  T346] R10: ffffc900005b7118 R11: ffffffff8ad79160 R12: 1ffff920000b6e04
[   23.797981][  T346] R13: 00000000000005b6 R14: ffffc900005b7118 R15: ffff888008a19218
[   23.798465][  T346] FS:  00007f737fbbe800(0000) GS:ffff8880a99b7000(0000) knlGS:0000000000000000
[   23.799023][  T346] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.799441][  T346] CR2: 0000000000436890 CR3: 000000001048d005 CR4: 0000000000772ef0
[   23.799914][  T346] PKRU: 55555554
[   23.800156][  T346] Call Trace:
[   23.800405][  T346]  <TASK>
[ 23.800612][ T346] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 23.801008][ T346] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.801338][ T346] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.801685][ T346] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 23.802009][ T346] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.802347][ T346] netif_set_mtu (net/core/dev.c:9652) 
[ 23.802678][ T346] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.803007][ T346] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 23.803331][ T346] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.803594][ T346] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 23.803915][ T346] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 23.804243][ T346] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 23.804633][ T346] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 23.805034][ T346] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 23.805364][ T346] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 23.805699][ T346] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 23.806032][ T346] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 23.806350][ T346] ? __dev_get_by_name (net/core/dev.c:865) 
[ 23.806679][ T346] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.807003][ T346] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.807329][ T346] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.807653][ T346] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.807981][ T346] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 23.808320][ T346] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.808699][ T346] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.809038][ T346] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.809361][ T346] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.809701][ T346] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.810019][ T346] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.810343][ T346] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.810680][ T346] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.811019][ T346] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.811341][ T346] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.811702][ T346] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.812039][ T346] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.812372][ T346] ? 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) 
[ 23.812740][ T346] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.813070][ T346] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.813408][ T346] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.813736][ T346] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.814065][ T346] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.814406][ T346] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.814741][ T346] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.815071][ T346] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.815400][ T346] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.815817][ T346] ___sys_sendmsg (net/socket.c:2670) 
[ 23.816141][ T346] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.816504][ T346] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 23.816842][ T346] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.817168][ T346] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 23.817505][ T346] ? __handle_mm_fault (mm/memory.c:6212) 
[ 23.817825][ T346] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 23.818156][ T346] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 23.818512][ T346] __sys_sendmsg (net/socket.c:2700) 
[ 23.818839][ T346] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.819164][ T346] ? 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) 
[ 23.819508][ T346] ? 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) 
[ 23.820065][ T346] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.820663][ T346] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.821002][ T346] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.821411][  T346] RIP: 0033:0x7f737fd8b1e7
[ 23.821767][ T346] 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)
[   23.823158][  T346] RSP: 002b:00007fffd20ce178 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.823653][  T346] RAX: ffffffffffffffda RBX: 00007fffd20ce8a0 RCX: 00007f737fd8b1e7
[   23.824128][  T346] RDX: 0000000000000000 RSI: 00007fffd20ce1e0 RDI: 0000000000000005
[   23.824876][  T346] RBP: 0000000000000008 R08: 00000000000000ac R09: 0000000000000000
[   23.825597][  T346] R10: 00007f737fc836f8 R11: 0000000000000246 R12: 00007fffd20ce8c0


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