======================================
| [   20.161017][  T312] ip_gre: GRE over IPv4 tunneling driver
| [   20.247981][  T311] ------------[ cut here ]------------
| [ 20.248809][ T311] WARNING: CPU: 3 PID: 311 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   20.250029][  T311] Modules linked in: ip_gre gre sch_ingress vrf veth
[   20.251473][  T311] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.251983][ T311] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 20.252386][ T311] 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
[   20.255259][  T311] RSP: 0018:ffffc90000577000 EFLAGS: 00010246
[   20.255690][  T311] RAX: 0000000000000000 RBX: ffff888004d24000 RCX: 0000000000000001
[   20.256168][  T311] RDX: 0000000000000000 RSI: ffffffff9449b941 RDI: ffffffff93c555e0
[   20.256715][  T311] RBP: ffffc900005770e8 R08: ffff888004d24218 R09: 0000000000000000
[   20.257225][  T311] R10: ffffc90000577118 R11: ffffffff94979160 R12: 1ffff920000aee04
[   20.257759][  T311] R13: 00000000000005b6 R14: ffffc90000577118 R15: ffff888004d24218
[   20.258527][  T311] FS:  00007f14462eb800(0000) GS:ffff88809fe37000(0000) knlGS:0000000000000000
[   20.259103][  T311] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.259545][  T311] CR2: 00005606c39fa148 CR3: 000000000e064006 CR4: 0000000000772ef0
[   20.260070][  T311] PKRU: 55555554
[   20.260332][  T311] Call Trace:
[   20.260836][  T311]  <TASK>
[ 20.261262][ T311] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 20.261683][ T311] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.262270][ T311] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 20.262863][ T311] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 20.263173][ T311] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 20.263524][ T311] netif_set_mtu (net/core/dev.c:9652) 
[ 20.263856][ T311] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 20.264188][ T311] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 20.264769][ T311] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 20.265011][ T311] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 20.265358][ T311] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 20.265691][ T311] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 20.266031][ T311] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 20.266588][ T311] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 20.267015][ T311] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 20.267416][ T311] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 20.268022][ T311] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 20.268448][ T311] ? __dev_get_by_name (net/core/dev.c:865) 
[ 20.268938][ T311] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.269253][ T311] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.269594][ T311] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 20.269940][ T311] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.270417][ T311] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 20.270847][ T311] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 20.271179][ T311] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.271693][ T311] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 20.272136][ T311] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.272551][ T311] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.272944][ T311] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 20.273605][ T311] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.274032][ T311] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.274460][ T311] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 20.274798][ T311] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.275119][ T311] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 20.275476][ T311] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 20.275895][ T311] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 20.276357][ T311] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 20.277161][ T311] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 20.277500][ T311] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.277822][ T311] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 20.278195][ T311] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 20.279178][ T311] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 20.279528][ T311] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 20.279899][ T311] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 20.280953][ T311] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 20.281653][ T311] ___sys_sendmsg (net/socket.c:2670) 
[ 20.282039][ T311] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 20.282369][ T311] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 20.282930][ T311] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.283278][ T311] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 20.283652][ T311] ? __handle_mm_fault (mm/memory.c:6212) 
[ 20.283981][ T311] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 20.284736][ T311] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 20.285158][ T311] __sys_sendmsg (net/socket.c:2700) 
[ 20.285519][ T311] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 20.285835][ T311] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 20.286179][ T311] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 20.286869][ T311] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.287266][ T311] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.287707][ T311] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.288154][  T311] RIP: 0033:0x7f14464b81e7
[ 20.288532][ T311] Code: Unable to access opcode bytes at 0x7f14464b81bd.

Code starting with the faulting instruction
===========================================
[   20.288941][  T311] RSP: 002b:00007fff06ea7c08 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.289560][  T311] RAX: ffffffffffffffda RBX: 00007fff06ea8330 RCX: 00007f14464b81e7
[   20.290037][  T311] RDX: 0000000000000000 RSI: 00007fff06ea7c70 RDI: 0000000000000005
[   20.290542][  T311] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   20.291003][  T311] R10: 00007f14463b06f8 R11: 0000000000000246 R12: 00007fff06ea8350
[   20.291568][  T311] R13: 00000000686e3ed0 R14: 0000000000499600 R15: 00007fff06ea7d5c
| [   23.172033][  T340] ------------[ cut here ]------------
| [ 23.172408][ T340] WARNING: CPU: 2 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) 
| [   23.173060][  T340] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.175858][  T340] Tainted: [W]=WARN
[   23.176121][  T340] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.176717][ 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) 
[ 23.177077][ 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
[   23.178239][  T340] RSP: 0018:ffffc90000676ef0 EFLAGS: 00010246
[   23.178670][  T340] RAX: 0000000000000000 RBX: ffff888010f5a000 RCX: 0000000000000001
[   23.179170][  T340] RDX: 0000000000000000 RSI: ffffffff9449b941 RDI: ffffffff93c555e0
[   23.179687][  T340] RBP: ffffc90000676fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.180185][  T340] R10: ffffc90000677010 R11: ffffffff952a8918 R12: 1ffff920000cede2
[   23.180686][  T340] R13: 00000000000005dc R14: ffffc90000677010 R15: ffff888010f5af08
[   23.181188][  T340] FS:  00007f5de5a19800(0000) GS:ffff88809fdb7000(0000) knlGS:0000000000000000
[   23.181774][  T340] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.182195][  T340] CR2: 00000000004e5aa8 CR3: 000000000e09c004 CR4: 0000000000772ef0
[   23.182699][  T340] PKRU: 55555554
[   23.182953][  T340] Call Trace:
[   23.183206][  T340]  <TASK>
[ 23.183393][ T340] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.183736][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.184076][ T340] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.184435][ T340] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.184852][ T340] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.185190][ T340] netif_set_mtu (net/core/dev.c:9652) 
[ 23.185533][ T340] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.185884][ T340] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.186366][ T340] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.186625][ T340] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.187076][ T340] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.187469][ T340] do_set_master (net/core/rtnetlink.c:2948) 
[ 23.187810][ T340] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.188148][ T340] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.188589][ T340] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.188949][ T340] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.189285][ T340] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.189640][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.189995][ 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) 
[ 23.190326][ T340] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.190758][ T340] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.191104][ T340] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.191447][ T340] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.191782][ T340] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.192118][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.192465][ T340] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.192804][ T340] ? __create_object (mm/kmemleak.c:771) 
[ 23.193147][ T340] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.193499][ T340] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.193838][ T340] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.194260][ T340] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.194615][ T340] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.194961][ T340] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.195294][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.195644][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.195977][ T340] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.196309][ T340] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.196662][ T340] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.196997][ T340] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.197330][ T340] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.197677][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.198019][ T340] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.198368][ T340] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.198706][ T340] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.199061][ T340] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.199402][ 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) 
[ 23.199804][ T340] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.200143][ T340] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.200486][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.200828][ T340] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.201164][ T340] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.201542][ T340] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.201920][ T340] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.202259][ T340] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.202677][ T340] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.203108][ T340] ___sys_sendmsg (net/socket.c:2670) 
[ 23.203458][ T340] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.203796][ 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) 
[ 23.204221][ T340] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.204567][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.204907][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.205247][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.205590][ 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) 
[ 23.205925][ T340] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.206266][ T340] __sys_sendmsg (net/socket.c:2700) 
[ 23.206607][ T340] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.207020][ T340] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.207379][ T340] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.207753][ T340] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.208121][ T340] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.208549][  T340] RIP: 0033:0x7f5de5be61e7
[ 23.208900][ 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)
[   23.210069][  T340] RSP: 002b:00007fff2d44e378 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.210572][  T340] RAX: ffffffffffffffda RBX: 00007fff2d44eaa0 RCX: 00007f5de5be61e7
[   23.211067][  T340] RDX: 0000000000000000 RSI: 00007fff2d44e3e0 RDI: 0000000000000005
[   23.211576][  T340] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.212069][  T340] R10: 000000002f9a9910 R11: 0000000000000246 R12: 0000000000000004
[   23.212568][  T340] R13: 00000000686e3ed4 R14: 0000000000499600 R15: 0000000000000000
| [   23.455330][  T342] ------------[ cut here ]------------
| [ 23.455869][ T342] WARNING: CPU: 3 PID: 342 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   23.456639][  T342] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.458066][  T342] Tainted: [W]=WARN
[   23.458313][  T342] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.458760][ T342] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 23.459095][ T342] 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
[   23.460230][  T342] RSP: 0018:ffffc90000666ef0 EFLAGS: 00010246
[   23.460658][  T342] RAX: 0000000000000000 RBX: ffff888010f5a000 RCX: 0000000000000001
[   23.461174][  T342] RDX: 0000000000000000 RSI: ffffffff9449b941 RDI: ffffffff93c555e0
[   23.461692][  T342] RBP: ffffc90000666fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.462274][  T342] R10: ffffc90000667010 R11: ffffffff952a8918 R12: 1ffff920000ccde2
[   23.462786][  T342] R13: 00000000000005dc R14: ffffc90000667010 R15: ffff888010f5af08
[   23.463281][  T342] FS:  00007f96610ab800(0000) GS:ffff88809fe37000(0000) knlGS:0000000000000000
[   23.463886][  T342] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.464324][  T342] CR2: 00000000004e5ab0 CR3: 000000000e09c001 CR4: 0000000000772ef0
[   23.464843][  T342] PKRU: 55555554
[   23.465088][  T342] Call Trace:
[   23.465359][  T342]  <TASK>
[ 23.465541][ T342] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.465890][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.466245][ T342] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.466594][ T342] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.467003][ T342] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.467352][ T342] netif_set_mtu (net/core/dev.c:9652) 
[ 23.467695][ T342] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.468036][ T342] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.468517][ T342] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.468770][ T342] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.469210][ T342] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.469599][ T342] do_set_master (net/core/rtnetlink.c:2948) 
[ 23.469933][ T342] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.470258][ T342] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.470679][ T342] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.471008][ T342] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.471334][ T342] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.471699][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.472029][ T342] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113) 
[ 23.472369][ T342] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.472785][ T342] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.473108][ T342] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.473451][ T342] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.473788][ T342] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.474134][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.474470][ T342] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.474791][ T342] ? __create_object (mm/kmemleak.c:771) 
[ 23.475133][ T342] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.475468][ T342] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.475799][ T342] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.476211][ T342] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.476564][ T342] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.476919][ T342] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.477248][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.477604][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.477945][ T342] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.478288][ T342] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.478643][ T342] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.478966][ T342] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.479299][ T342] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.479636][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.479973][ T342] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.480295][ T342] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.480627][ T342] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.480973][ T342] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.481295][ T342] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 23.481665][ T342] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.482000][ T342] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.482474][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.482823][ T342] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.483148][ T342] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.483506][ T342] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.483836][ T342] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.484173][ T342] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.484513][ T342] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.484944][ T342] ___sys_sendmsg (net/socket.c:2670) 
[ 23.485263][ T342] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.485611][ T342] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3096) 
[ 23.486048][ T342] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.486396][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.486721][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.487064][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.487398][ T342] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 23.487724][ T342] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.488051][ T342] __sys_sendmsg (net/socket.c:2700) 
[ 23.488399][ T342] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.488855][ T342] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.489245][ T342] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.489710][ T342] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.490083][ T342] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.490498][  T342] RIP: 0033:0x7f96612781e7
[ 23.490833][ T342] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   23.491985][  T342] RSP: 002b:00007ffd4a3a4698 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.492495][  T342] RAX: ffffffffffffffda RBX: 00007ffd4a3a4dc0 RCX: 00007f96612781e7
[   23.492977][  T342] RDX: 0000000000000000 RSI: 00007ffd4a3a4700 RDI: 0000000000000005
[   23.493465][  T342] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.493944][  T342] R10: 00000000343e6910 R11: 0000000000000246 R12: 0000000000000004
[   23.494441][  T342] R13: 00000000686e3ed4 R14: 0000000000499600 R15: 0000000000000000
| [   23.896400][  T345] ------------[ cut here ]------------
| [ 23.896781][ T345] WARNING: CPU: 1 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) 
| [   23.897425][  T345] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.898816][  T345] Tainted: [W]=WARN
[   23.899048][  T345] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.899436][ 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) 
[ 23.899754][ T345] 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
[   23.900848][  T345] RSP: 0018:ffffc90000587000 EFLAGS: 00010246
[   23.901235][  T345] RAX: 0000000000000000 RBX: ffff88800760c000 RCX: 0000000000000001
[   23.901708][  T345] RDX: 0000000000000000 RSI: ffffffff9449b941 RDI: ffffffff93c555e0
[   23.902170][  T345] RBP: ffffc900005870e8 R08: ffff88800760c218 R09: 0000000000000000
[   23.902786][  T345] R10: ffffc90000587118 R11: ffffffff94979160 R12: 1ffff920000b0e04
[   23.903240][  T345] R13: 00000000000005b6 R14: ffffc90000587118 R15: ffff88800760c218
[   23.903854][  T345] FS:  00007f0955468800(0000) GS:ffff88809fd37000(0000) knlGS:0000000000000000
[   23.904587][  T345] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.904989][  T345] CR2: 0000000000436890 CR3: 000000000e09c002 CR4: 0000000000772ef0
[   23.905738][  T345] PKRU: 55555554
[   23.905972][  T345] Call Trace:
[   23.906198][  T345]  <TASK>
[ 23.906499][ T345] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 23.906877][ T345] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.907187][ T345] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.907640][ T345] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 23.907963][ T345] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.908271][ T345] netif_set_mtu (net/core/dev.c:9652) 
[ 23.908761][ T345] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.909094][ T345] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 23.909524][ T345] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.909764][ T345] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 23.910069][ T345] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 23.910387][ T345] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 23.910695][ T345] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 23.911076][ T345] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 23.911398][ T345] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 23.911704][ T345] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 23.912016][ T345] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 23.912315][ T345] ? __dev_get_by_name (net/core/dev.c:865) 
[ 23.912626][ T345] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.912930][ T345] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.913239][ T345] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.913558][ T345] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.913867][ T345] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 23.914197][ T345] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.914520][ T345] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.914836][ T345] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.915134][ T345] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.915448][ T345] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.915748][ T345] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.916052][ T345] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.916372][ T345] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.916748][ T345] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.917057][ T345] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.917384][ T345] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.917702][ T345] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.918002][ 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) 
[ 23.918306][ T345] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.918624][ T345] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.918930][ T345] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.919245][ T345] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.919563][ T345] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.919865][ T345] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.920174][ T345] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.920491][ T345] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.920797][ T345] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.921195][ T345] ___sys_sendmsg (net/socket.c:2670) 
[ 23.921518][ T345] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.921819][ T345] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 23.922126][ T345] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.922436][ T345] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 23.922746][ T345] ? __handle_mm_fault (mm/memory.c:6212) 
[ 23.923047][ T345] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 23.923393][ T345] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 23.923716][ T345] __sys_sendmsg (net/socket.c:2700) 
[ 23.924021][ T345] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.924349][ T345] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 23.924663][ T345] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 23.924971][ T345] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.925277][ T345] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.925607][ T345] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.925987][  T345] RIP: 0033:0x7f09556351e7
[ 23.926301][ 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)
[   23.927401][  T345] RSP: 002b:00007fff5c8fa428 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.927901][  T345] RAX: ffffffffffffffda RBX: 00007fff5c8fab50 RCX: 00007f09556351e7
[   23.928396][  T345] RDX: 0000000000000000 RSI: 00007fff5c8fa490 RDI: 0000000000000005
[   23.928865][  T345] RBP: 0000000000000008 R08: 00000000000000ac R09: 0000000000000000
[   23.929375][  T345] R10: 00007f095552d6f8 R11: 0000000000000246 R12: 00007fff5c8fab70


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