======================================
| [   20.091014][  T313] ip_gre: GRE over IPv4 tunneling driver
| [   20.151780][  T312] ------------[ cut here ]------------
| [ 20.152239][ T312] WARNING: CPU: 2 PID: 312 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) 
| [   20.152946][  T312] Modules linked in: ip_gre gre sch_ingress vrf veth
[   20.153987][  T312] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.154405][ T312] 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) 
[ 20.154762][ T312] 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
[   20.155925][  T312] RSP: 0018:ffffc90000577000 EFLAGS: 00010246
[   20.156335][  T312] RAX: 0000000000000000 RBX: ffff88800b3ec000 RCX: 0000000000000001
[   20.156818][  T312] RDX: 0000000000000000 RSI: ffffffffb269b941 RDI: ffffffffb1e555e0
[   20.157301][  T312] RBP: ffffc900005770e8 R08: ffff88800b3ec218 R09: 0000000000000000
[   20.157785][  T312] R10: ffffc90000577118 R11: ffffffffb2b79160 R12: 1ffff920000aee04
[   20.158253][  T312] R13: 00000000000005b6 R14: ffffc90000577118 R15: ffff88800b3ec218
[   20.158736][  T312] FS:  00007f887f035800(0000) GS:ffff888081bb7000(0000) knlGS:0000000000000000
[   20.159326][  T312] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.159756][  T312] CR2: 00007f9621055000 CR3: 000000000cd70004 CR4: 0000000000772ef0
[   20.160266][  T312] PKRU: 55555554
[   20.160698][  T312] Call Trace:
[   20.160973][  T312]  <TASK>
[ 20.161156][ T312] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 20.166024][ T312] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.166377][ T312] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 20.166740][ T312] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 20.167088][ T312] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 20.167448][ T312] netif_set_mtu (net/core/dev.c:9652) 
[ 20.167802][ T312] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 20.168149][ T312] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 20.168497][ T312] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 20.168752][ T312] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 20.169088][ T312] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 20.169446][ T312] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 20.169781][ T312] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 20.170171][ T312] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 20.170522][ T312] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 20.170844][ T312] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 20.171174][ T312] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 20.171503][ T312] ? __dev_get_by_name (net/core/dev.c:865) 
[ 20.171830][ T312] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.172149][ T312] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.172488][ T312] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 20.172801][ T312] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.173125][ T312] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 20.173460][ T312] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 20.173783][ T312] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.174337][ T312] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 20.174683][ T312] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.175010][ T312] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.175405][ T312] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 20.175730][ T312] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.176063][ T312] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.176407][ T312] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 20.176726][ T312] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.177051][ T312] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 20.177382][ T312] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 20.177722][ T312] ? 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) 
[ 20.178041][ T312] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 20.178365][ T312] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 20.179343][ T312] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.179678][ T312] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 20.180002][ T312] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 20.180768][ T312] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 20.181118][ T312] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 20.181453][ T312] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 20.181778][ T312] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 20.182179][ T312] ___sys_sendmsg (net/socket.c:2670) 
[ 20.182516][ T312] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 20.182838][ T312] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 20.183167][ T312] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.183494][ T312] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 20.183826][ T312] ? __handle_mm_fault (mm/memory.c:6212) 
[ 20.184595][ T312] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 20.184911][ T312] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 20.185250][ T312] __sys_sendmsg (net/socket.c:2700) 
[ 20.185583][ T312] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 20.185904][ T312] ? 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) 
[ 20.186467][ T312] ? 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) 
[ 20.187236][ T312] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.187574][ T312] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.187891][ T312] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.188289][  T312] RIP: 0033:0x7f887f2021e7
[ 20.188642][ T312] Code: Unable to access opcode bytes at 0x7f887f2021bd.

Code starting with the faulting instruction
===========================================
[   20.189060][  T312] RSP: 002b:00007ffef5059d88 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.189549][  T312] RAX: ffffffffffffffda RBX: 00007ffef505a4b0 RCX: 00007f887f2021e7
[   20.190022][  T312] RDX: 0000000000000000 RSI: 00007ffef5059df0 RDI: 0000000000000005
[   20.191460][  T312] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   20.191934][  T312] R10: 00007f887f0fa6f8 R11: 0000000000000246 R12: 00007ffef505a4d0
[   20.192431][  T312] R13: 00000000686e1e1d R14: 0000000000499600 R15: 00007ffef5059edc
| [   23.057807][  T341] ------------[ cut here ]------------
| [ 23.058130][ T341] WARNING: CPU: 3 PID: 341 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) 
| [   23.058919][  T341] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.060724][  T341] Tainted: [W]=WARN
[   23.060981][  T341] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.061383][ T341] 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) 
[ 23.061729][ T341] 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
[   23.062962][  T341] RSP: 0018:ffffc90000636ef0 EFLAGS: 00010246
[   23.063382][  T341] RAX: 0000000000000000 RBX: ffff8880290aa000 RCX: 0000000000000001
[   23.063875][  T341] RDX: 0000000000000000 RSI: ffffffffb269b941 RDI: ffffffffb1e555e0
[   23.064360][  T341] RBP: ffffc90000636fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.064849][  T341] R10: ffffc90000637010 R11: ffffffffb34a8918 R12: 1ffff920000c6de2
[   23.065332][  T341] R13: 00000000000005dc R14: ffffc90000637010 R15: ffff8880290aaf08
[   23.065821][  T341] FS:  00007f73623fa800(0000) GS:ffff888081c37000(0000) knlGS:0000000000000000
[   23.066409][  T341] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.066818][  T341] CR2: 00000000004e5aa8 CR3: 000000000cd76003 CR4: 0000000000772ef0
[   23.067304][  T341] PKRU: 55555554
[   23.067554][  T341] Call Trace:
[   23.067799][  T341]  <TASK>
[ 23.067966][ T341] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.068292][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.068638][ T341] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.068963][ T341] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.069367][ T341] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.069702][ T341] netif_set_mtu (net/core/dev.c:9652) 
[ 23.070028][ T341] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.070361][ T341] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.070828][ T341] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.071087][ T341] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.071531][ T341] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.071895][ T341] do_set_master (net/core/rtnetlink.c:2948) 
[ 23.072225][ T341] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.072596][ T341] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.073012][ T341] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.073346][ T341] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.073681][ T341] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.074013][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.074340][ T341] ? __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) 
[ 23.074680][ T341] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.075080][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.075416][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.075741][ T341] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.076069][ T341] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.076420][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.076745][ T341] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.077065][ T341] ? __create_object (mm/kmemleak.c:771) 
[ 23.077403][ T341] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.077729][ T341] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.078059][ T341] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.078481][ T341] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.078816][ T341] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.079146][ T341] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.079478][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.079807][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.080130][ T341] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.080459][ T341] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.080783][ T341] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.081119][ T341] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.081454][ T341] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.081781][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.082108][ T341] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.082454][ T341] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.082780][ T341] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.083114][ T341] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.083451][ T341] ? 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) 
[ 23.083778][ T341] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.084105][ T341] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.084436][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.084765][ T341] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.085091][ T341] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.085424][ T341] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.085760][ T341] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.086084][ T341] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.086424][ T341] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.086836][ T341] ___sys_sendmsg (net/socket.c:2670) 
[ 23.087156][ T341] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.087486][ T341] ? __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) 
[ 23.087893][ T341] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.088222][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.088554][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.088882][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.089207][ T341] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 23.089540][ T341] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.089874][ T341] __sys_sendmsg (net/socket.c:2700) 
[ 23.090196][ T341] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.090616][ T341] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.090969][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.091294][ T341] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.091627][ T341] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.092030][  T341] RIP: 0033:0x7f73625c71e7
[ 23.092366][ T341] 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)
[   23.093534][  T341] RSP: 002b:00007ffec6fc93b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.094023][  T341] RAX: ffffffffffffffda RBX: 00007ffec6fc9ae0 RCX: 00007f73625c71e7
[   23.094524][  T341] RDX: 0000000000000000 RSI: 00007ffec6fc9420 RDI: 0000000000000005
[   23.095008][  T341] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.095500][  T341] R10: 00000000391cd910 R11: 0000000000000246 R12: 0000000000000004
[   23.095986][  T341] R13: 00000000686e1e20 R14: 0000000000499600 R15: 0000000000000000
| [   23.351278][  T343] ------------[ cut here ]------------
| [ 23.351618][ T343] WARNING: CPU: 3 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) 
| [   23.352250][  T343] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.353861][  T343] Tainted: [W]=WARN
[   23.354105][  T343] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.354512][ 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) 
[ 23.354845][ 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
[   23.356000][  T343] RSP: 0018:ffffc90000576ef0 EFLAGS: 00010246
[   23.356567][  T343] RAX: 0000000000000000 RBX: ffff8880290aa000 RCX: 0000000000000001
[   23.357033][  T343] RDX: 0000000000000000 RSI: ffffffffb269b941 RDI: ffffffffb1e555e0
[   23.357539][  T343] RBP: ffffc90000576fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.358021][  T343] R10: ffffc90000577010 R11: ffffffffb34a8918 R12: 1ffff920000aede2
[   23.358509][  T343] R13: 00000000000005dc R14: ffffc90000577010 R15: ffff8880290aaf08
[   23.358990][  T343] FS:  00007f4341c94800(0000) GS:ffff888081c37000(0000) knlGS:0000000000000000
[   23.359567][  T343] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.359976][  T343] CR2: 00000000004e5ab0 CR3: 000000000cd7a001 CR4: 0000000000772ef0
[   23.360468][  T343] PKRU: 55555554
[   23.360710][  T343] Call Trace:
[   23.360960][  T343]  <TASK>
[ 23.361126][ T343] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.361458][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.361787][ T343] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.362107][ T343] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.362518][ T343] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.362841][ T343] netif_set_mtu (net/core/dev.c:9652) 
[ 23.363164][ T343] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.363512][ T343] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.363959][ T343] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.364201][ T343] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.364679][ T343] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.365049][ T343] do_set_master (net/core/rtnetlink.c:2948) 
[ 23.365377][ T343] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.365711][ T343] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.366118][ T343] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.366445][ T343] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.366764][ T343] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.367094][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.367439][ 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) 
[ 23.367761][ T343] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.368163][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.368515][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.368836][ T343] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.369155][ T343] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.369492][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.369814][ T343] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.370133][ T343] ? __create_object (mm/kmemleak.c:771) 
[ 23.370463][ T343] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.370789][ T343] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.371121][ T343] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.371542][ T343] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.371873][ T343] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.372209][ T343] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.372542][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.372875][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.373197][ T343] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.373526][ T343] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.373854][ T343] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.374176][ T343] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.374505][ T343] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.374839][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.375163][ T343] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.375501][ T343] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.375826][ T343] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.376155][ T343] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.376485][ 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) 
[ 23.376811][ T343] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.377142][ T343] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.377469][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.377797][ T343] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.378125][ T343] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.378457][ T343] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.378788][ T343] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.379116][ T343] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.379459][ T343] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.379872][ T343] ___sys_sendmsg (net/socket.c:2670) 
[ 23.380197][ T343] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.380527][ 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) 
[ 23.380938][ T343] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.381265][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.381603][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.381940][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.382267][ 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) 
[ 23.382597][ T343] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.382929][ T343] __sys_sendmsg (net/socket.c:2700) 
[ 23.383249][ T343] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.383668][ T343] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.384005][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.384336][ T343] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.384669][ T343] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.385073][  T343] RIP: 0033:0x7f4341e611e7
[ 23.385419][ 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)
[   23.386572][  T343] RSP: 002b:00007ffed84293a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.387064][  T343] RAX: ffffffffffffffda RBX: 00007ffed8429ad0 RCX: 00007f4341e611e7
[   23.387566][  T343] RDX: 0000000000000000 RSI: 00007ffed8429410 RDI: 0000000000000005
[   23.388052][  T343] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.388543][  T343] R10: 000000000aeff910 R11: 0000000000000246 R12: 0000000000000004
[   23.389035][  T343] R13: 00000000686e1e21 R14: 0000000000499600 R15: 0000000000000000
| [   23.793725][  T346] ------------[ cut here ]------------
| [ 23.794065][ T346] WARNING: CPU: 3 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) 
| [   23.794783][  T346] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.797292][  T346] Tainted: [W]=WARN
[   23.797542][  T346] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.797939][ 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) 
[ 23.798271][ 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
[   23.799417][  T346] RSP: 0018:ffffc900005e7000 EFLAGS: 00010246
[   23.799823][  T346] RAX: 0000000000000000 RBX: ffff88802908c000 RCX: 0000000000000001
[   23.800299][  T346] RDX: 0000000000000000 RSI: ffffffffb269b941 RDI: ffffffffb1e555e0
[   23.800789][  T346] RBP: ffffc900005e70e8 R08: ffff88802908c218 R09: 0000000000000000
[   23.801277][  T346] R10: ffffc900005e7118 R11: ffffffffb2b79160 R12: 1ffff920000bce04
[   23.801761][  T346] R13: 00000000000005b6 R14: ffffc900005e7118 R15: ffff88802908c218
[   23.802241][  T346] FS:  00007f75507d9800(0000) GS:ffff888081c37000(0000) knlGS:0000000000000000
[   23.802810][  T346] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.803212][  T346] CR2: 0000000000436890 CR3: 0000000004d96006 CR4: 0000000000772ef0
[   23.803700][  T346] PKRU: 55555554
[   23.803967][  T346] Call Trace:
[   23.804207][  T346]  <TASK>
[ 23.804371][ T346] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 23.804787][ T346] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.805112][ T346] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.805447][ T346] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 23.805771][ T346] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.806098][ T346] netif_set_mtu (net/core/dev.c:9652) 
[ 23.806425][ T346] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.806757][ T346] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 23.807079][ T346] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.807325][ T346] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 23.807650][ T346] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 23.807976][ T346] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 23.808300][ T346] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 23.808724][ T346] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 23.809053][ T346] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 23.809374][ T346] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 23.809714][ T346] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 23.810032][ T346] ? __dev_get_by_name (net/core/dev.c:865) 
[ 23.810352][ T346] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.810679][ T346] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.811019][ T346] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.811336][ T346] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.811672][ T346] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 23.812012][ T346] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.812338][ T346] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.812679][ T346] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.812998][ T346] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.813322][ T346] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.813653][ T346] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.813981][ T346] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.814306][ T346] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.814647][ T346] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.814967][ T346] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.815291][ T346] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.815632][ T346] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.815950][ 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) 
[ 23.816269][ T346] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.816589][ T346] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.816898][ T346] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.817207][ T346] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.817525][ T346] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.817830][ T346] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.818137][ T346] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.818451][ T346] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.818758][ T346] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.819153][ T346] ___sys_sendmsg (net/socket.c:2670) 
[ 23.819467][ T346] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.819774][ T346] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 23.820083][ T346] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.820413][ T346] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 23.820741][ T346] ? __handle_mm_fault (mm/memory.c:6212) 
[ 23.821078][ T346] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 23.821405][ T346] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 23.821745][ T346] __sys_sendmsg (net/socket.c:2700) 
[ 23.822064][ T346] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.822383][ 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) 
[ 23.822722][ 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) 
[ 23.823045][ T346] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.823375][ T346] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.823705][ T346] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.824103][  T346] RIP: 0033:0x7f75509a61e7
[ 23.824441][ 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)
[   23.825587][  T346] RSP: 002b:00007ffd7ec322e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.826076][  T346] RAX: ffffffffffffffda RBX: 00007ffd7ec32a10 RCX: 00007f75509a61e7
[   23.826564][  T346] RDX: 0000000000000000 RSI: 00007ffd7ec32350 RDI: 0000000000000005
[   23.827040][  T346] RBP: 0000000000000008 R08: 00000000000000ac R09: 0000000000000000
[   23.827530][  T346] R10: 00007f755089e6f8 R11: 0000000000000246 R12: 00007ffd7ec32a30


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