======================================
| [   20.697742][  T313] ip_gre: GRE over IPv4 tunneling driver
| [   20.748699][  T312] ------------[ cut here ]------------
| [ 20.749444][ T312] WARNING: CPU: 0 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) 
| [   20.750588][  T312] Modules linked in: ip_gre gre sch_ingress vrf veth
[   20.752972][  T312] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.753683][ 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) 
[ 20.754320][ 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
[   20.756285][  T312] RSP: 0018:ffffc900005c7000 EFLAGS: 00010246
[   20.757000][  T312] RAX: 0000000000000000 RBX: ffff88800aebc000 RCX: 0000000000000001
[   20.757861][  T312] RDX: 0000000000000000 RSI: ffffffff9bc9b941 RDI: ffffffff9b4555e0
[   20.758706][  T312] RBP: ffffc900005c70e8 R08: ffff88800aebc218 R09: 0000000000000000
[   20.759577][  T312] R10: ffffc900005c7118 R11: ffffffff9c179160 R12: 1ffff920000b8e04
[   20.760434][  T312] R13: 00000000000005b6 R14: ffffc900005c7118 R15: ffff88800aebc218
[   20.761483][  T312] FS:  00007fe9cc1a1800(0000) GS:ffff8880984b7000(0000) knlGS:0000000000000000
[   20.762474][  T312] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.763182][  T312] CR2: 000055bff8fb8588 CR3: 0000000004f1e005 CR4: 0000000000772ef0
[   20.764032][  T312] PKRU: 55555554
[   20.764452][  T312] Call Trace:
[   20.764891][  T312]  <TASK>
[ 20.765179][ T312] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 20.765908][ T312] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.766473][ T312] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 20.767050][ T312] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 20.768507][ T312] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 20.769092][ T312] netif_set_mtu (net/core/dev.c:9652) 
[ 20.769682][ T312] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 20.770283][ T312] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 20.770864][ T312] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 20.771280][ T312] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 20.771849][ T312] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 20.772413][ T312] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 20.772988][ T312] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 20.773681][ T312] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 20.774275][ T312] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 20.775691][ T312] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 20.776277][ T312] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 20.776838][ T312] ? __dev_get_by_name (net/core/dev.c:865) 
[ 20.777395][ T312] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.777974][ T312] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.778518][ T312] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 20.779082][ T312] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.779652][ T312] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 20.791872][ T312] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 20.792485][ T312] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.793074][ T312] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 20.793616][ T312] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.794148][ T312] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.794472][ T312] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 20.794777][ T312] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.795136][ T312] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.795451][ T312] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 20.795765][ T312] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.796086][ T312] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 20.796757][ T312] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 20.797176][ 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) 
[ 20.797488][ T312] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 20.797820][ T312] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 20.798746][ T312] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.799325][ T312] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 20.799742][ T312] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 20.800175][ T312] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 20.801055][ T312] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 20.801400][ T312] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 20.802087][ T312] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 20.802768][ T312] ___sys_sendmsg (net/socket.c:2670) 
[ 20.803143][ T312] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 20.803461][ T312] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 20.803777][ T312] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.804136][ T312] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 20.804701][ T312] ? __handle_mm_fault (mm/memory.c:6212) 
[ 20.805275][ T312] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 20.805607][ T312] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 20.805945][ T312] __sys_sendmsg (net/socket.c:2700) 
[ 20.806282][ T312] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 20.806682][ 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) 
[ 20.807022][ 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) 
[ 20.807375][ T312] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.807689][ T312] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.808124][ T312] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.808738][  T312] RIP: 0033:0x7fe9cc36e1e7
[ 20.809126][ T312] Code: Unable to access opcode bytes at 0x7fe9cc36e1bd.

Code starting with the faulting instruction
===========================================
[   20.809844][  T312] RSP: 002b:00007ffeffe414e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.810334][  T312] RAX: ffffffffffffffda RBX: 00007ffeffe41c10 RCX: 00007fe9cc36e1e7
[   20.811182][  T312] RDX: 0000000000000000 RSI: 00007ffeffe41550 RDI: 0000000000000005
[   20.811651][  T312] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   20.812256][  T312] R10: 00007fe9cc2666f8 R11: 0000000000000246 R12: 00007ffeffe41c30
[   20.813515][  T312] R13: 00000000686e1c81 R14: 0000000000499600 R15: 00007ffeffe4163c
| [   23.675238][  T341] ------------[ cut here ]------------
| [ 23.675701][ 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) 
| [   23.676365][  T341] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.677787][  T341] Tainted: [W]=WARN
[   23.678035][  T341] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.678558][ 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) 
[ 23.679143][ 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
[   23.680932][  T341] RSP: 0000:ffffc900005feef0 EFLAGS: 00010246
[   23.681334][  T341] RAX: 0000000000000000 RBX: ffff888004cd2000 RCX: 0000000000000001
[   23.681792][  T341] RDX: 0000000000000000 RSI: ffffffff9bc9b941 RDI: ffffffff9b4555e0
[   23.682264][  T341] RBP: ffffc900005fefe0 R08: 0000000000000000 R09: 0000000000000000
[   23.682871][  T341] R10: ffffc900005ff010 R11: ffffffff9caa8918 R12: 1ffff920000bfde2
[   23.683343][  T341] R13: 00000000000005dc R14: ffffc900005ff010 R15: ffff888004cd2f08
[   23.683797][  T341] FS:  00007fc47df26800(0000) GS:ffff888098637000(0000) knlGS:0000000000000000
[   23.684380][  T341] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.684765][  T341] CR2: 00007fd57d71ebd4 CR3: 000000000ba2b003 CR4: 0000000000772ef0
[   23.685239][  T341] PKRU: 55555554
[   23.685482][  T341] Call Trace:
[   23.685710][  T341]  <TASK>
[ 23.685877][ T341] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.686186][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.686708][ T341] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.687275][ T341] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.688004][ T341] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.688329][ T341] netif_set_mtu (net/core/dev.c:9652) 
[ 23.688636][ T341] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.688963][ T341] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.689410][ T341] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.689657][ T341] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.690106][ T341] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.690478][ T341] do_set_master (net/core/rtnetlink.c:2948) 
[ 23.690790][ T341] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.691112][ T341] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.691515][ T341] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.691831][ T341] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.692139][ T341] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.692475][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.692821][ 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) 
[ 23.693137][ T341] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.693529][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.693845][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.694156][ T341] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.694485][ T341] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.694791][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.695112][ T341] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.695428][ T341] ? __create_object (mm/kmemleak.c:771) 
[ 23.695752][ T341] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.696086][ T341] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.696419][ T341] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.696824][ T341] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.697139][ T341] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.697464][ T341] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.697807][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.698122][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.698437][ T341] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.698747][ T341] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.699061][ T341] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.699382][ T341] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.699719][ T341] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.700040][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.700396][ T341] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.700704][ T341] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.701019][ T341] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.701353][ T341] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.701659][ 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) 
[ 23.701977][ T341] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.702295][ T341] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.702607][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.702926][ T341] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.703237][ T341] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.703679][ T341] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.704005][ T341] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.704326][ T341] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.704632][ T341] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.705038][ T341] ___sys_sendmsg (net/socket.c:2670) 
[ 23.705342][ T341] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.705653][ 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) 
[ 23.706046][ T341] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.706359][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.706671][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.706990][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.707299][ 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) 
[ 23.707609][ T341] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.707936][ T341] __sys_sendmsg (net/socket.c:2700) 
[ 23.708244][ T341] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.708624][ T341] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.708951][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.709259][ T341] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.709615][ T341] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.710006][  T341] RIP: 0033:0x7fc47e0f31e7
[ 23.710322][ 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)
[   23.711422][  T341] RSP: 002b:00007fff95a30058 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.711895][  T341] RAX: ffffffffffffffda RBX: 00007fff95a30780 RCX: 00007fc47e0f31e7
[   23.712353][  T341] RDX: 0000000000000000 RSI: 00007fff95a300c0 RDI: 0000000000000005
[   23.712816][  T341] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.713278][  T341] R10: 000000001501e910 R11: 0000000000000246 R12: 0000000000000004
[   23.713735][  T341] R13: 00000000686e1c84 R14: 0000000000499600 R15: 0000000000000000
| [   23.970645][  T343] ------------[ cut here ]------------
| [ 23.971003][ 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) 
| [   23.971620][  T343] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.973228][  T343] Tainted: [W]=WARN
[   23.973472][  T343] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.973876][ 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) 
[ 23.974297][ 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
[   23.975418][  T343] RSP: 0018:ffffc900005c6ef0 EFLAGS: 00010246
[   23.975826][  T343] RAX: 0000000000000000 RBX: ffff888004cd2000 RCX: 0000000000000001
[   23.976300][  T343] RDX: 0000000000000000 RSI: ffffffff9bc9b941 RDI: ffffffff9b4555e0
[   23.976769][  T343] RBP: ffffc900005c6fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.977251][  T343] R10: ffffc900005c7010 R11: ffffffff9caa8918 R12: 1ffff920000b8de2
[   23.977724][  T343] R13: 00000000000005dc R14: ffffc900005c7010 R15: ffff888004cd2f08
[   23.978207][  T343] FS:  00007f6163952800(0000) GS:ffff8880985b7000(0000) knlGS:0000000000000000
[   23.978753][  T343] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.979169][  T343] CR2: 00000000004e5ab0 CR3: 000000000dc7b004 CR4: 0000000000772ef0
[   23.979680][  T343] PKRU: 55555554
[   23.979934][  T343] Call Trace:
[   23.980174][  T343]  <TASK>
[ 23.980347][ T343] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.980667][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.981004][ T343] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.981322][ T343] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.981716][ T343] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.982058][ T343] netif_set_mtu (net/core/dev.c:9652) 
[ 23.982378][ T343] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.982708][ T343] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.983167][ T343] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.983413][ T343] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.983855][ T343] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.984225][ T343] do_set_master (net/core/rtnetlink.c:2948) 
[ 23.984550][ T343] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.984886][ T343] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.985287][ T343] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.985605][ T343] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.985930][ T343] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.986252][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.986575][ 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) 
[ 23.986909][ T343] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.987302][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.987620][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.987945][ T343] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.988264][ T343] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.988583][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.988912][ T343] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.989234][ T343] ? __create_object (mm/kmemleak.c:771) 
[ 23.989581][ T343] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.989922][ T343] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.990243][ T343] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.990634][ T343] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.990974][ T343] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.991297][ T343] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.991619][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.991952][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.992273][ T343] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.992586][ T343] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.992916][ T343] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.993233][ T343] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.993552][ T343] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.993885][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.994214][ T343] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.994530][ T343] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.994860][ T343] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.995190][ T343] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.995507][ 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) 
[ 23.995836][ T343] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.996157][ T343] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.996475][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.996809][ T343] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.997132][ T343] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.997452][ T343] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.997776][ T343] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.998108][ T343] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.998422][ T343] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.998841][ T343] ___sys_sendmsg (net/socket.c:2670) 
[ 23.999157][ T343] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.999474][ 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) 
[ 23.999890][ T343] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 24.000213][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.000533][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.000866][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.001190][ 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) 
[ 24.001510][ T343] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.001845][ T343] __sys_sendmsg (net/socket.c:2700) 
[ 24.002161][ T343] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 24.002551][ T343] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 24.002894][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.003213][ T343] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 24.003530][ T343] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   24.003939][  T343] RIP: 0033:0x7f6163b1f1e7
[ 24.004268][ 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)
[   24.005379][  T343] RSP: 002b:00007ffe51c585e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   24.005864][  T343] RAX: ffffffffffffffda RBX: 00007ffe51c58d10 RCX: 00007f6163b1f1e7
[   24.006333][  T343] RDX: 0000000000000000 RSI: 00007ffe51c58650 RDI: 0000000000000005
[   24.006812][  T343] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   24.007281][  T343] R10: 000000002fbed910 R11: 0000000000000246 R12: 0000000000000004
[   24.007753][  T343] R13: 00000000686e1c84 R14: 0000000000499600 R15: 0000000000000000
| [   24.418191][  T346] ------------[ cut here ]------------
| [ 24.418555][ T346] WARNING: CPU: 1 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) 
| [   24.419244][  T346] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   24.421124][  T346] Tainted: [W]=WARN
[   24.421371][  T346] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 24.421783][ 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) 
[ 24.422295][ 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
[   24.423682][  T346] RSP: 0018:ffffc90000587000 EFLAGS: 00010246
[   24.424240][  T346] RAX: 0000000000000000 RBX: ffff88800ae31000 RCX: 0000000000000001
[   24.424722][  T346] RDX: 0000000000000000 RSI: ffffffff9bc9b941 RDI: ffffffff9b4555e0
[   24.425381][  T346] RBP: ffffc900005870e8 R08: ffff88800ae31218 R09: 0000000000000000
[   24.426012][  T346] R10: ffffc90000587118 R11: ffffffff9c179160 R12: 1ffff920000b0e04
[   24.426510][  T346] R13: 00000000000005b6 R14: ffffc90000587118 R15: ffff88800ae31218
[   24.427166][  T346] FS:  00007f4898224800(0000) GS:ffff888098537000(0000) knlGS:0000000000000000
[   24.427731][  T346] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.428323][  T346] CR2: 00007fd57d29ff90 CR3: 000000000ecbb001 CR4: 0000000000772ef0
[   24.428987][  T346] PKRU: 55555554
[   24.429230][  T346] Call Trace:
[   24.429469][  T346]  <TASK>
[ 24.429640][ T346] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 24.430179][ T346] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.430509][ T346] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 24.430864][ T346] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 24.431175][ T346] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 24.431486][ T346] netif_set_mtu (net/core/dev.c:9652) 
[ 24.431798][ T346] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 24.432129][ T346] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 24.432440][ T346] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 24.432676][ T346] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 24.432990][ T346] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 24.433306][ T346] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 24.433624][ T346] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 24.434013][ T346] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 24.434328][ T346] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 24.434651][ T346] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 24.434982][ T346] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 24.435295][ T346] ? __dev_get_by_name (net/core/dev.c:865) 
[ 24.435614][ T346] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 24.435941][ T346] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 24.436255][ T346] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 24.436557][ T346] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 24.436882][ T346] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 24.437203][ T346] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 24.437521][ T346] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.437850][ T346] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 24.438164][ T346] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.438477][ T346] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.438780][ T346] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 24.439100][ T346] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.439426][ T346] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.439771][ T346] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 24.440102][ T346] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.440418][ T346] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 24.440734][ T346] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 24.441051][ 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) 
[ 24.441369][ T346] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 24.441682][ T346] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 24.442009][ T346] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.442320][ T346] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 24.442628][ T346] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 24.442949][ T346] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 24.443269][ T346] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 24.443595][ T346] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 24.443912][ T346] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 24.444318][ T346] ___sys_sendmsg (net/socket.c:2670) 
[ 24.444623][ T346] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 24.444943][ T346] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 24.445254][ T346] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 24.445563][ T346] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 24.445880][ T346] ? __handle_mm_fault (mm/memory.c:6212) 
[ 24.446193][ T346] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 24.446510][ T346] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 24.446846][ T346] __sys_sendmsg (net/socket.c:2700) 
[ 24.447152][ T346] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 24.447471][ 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) 
[ 24.447779][ 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) 
[ 24.448100][ T346] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.448407][ T346] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 24.448722][ T346] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   24.449116][  T346] RIP: 0033:0x7f48983f11e7
[ 24.449441][ 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)
[   24.450555][  T346] RSP: 002b:00007ffd380b2ea8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   24.451036][  T346] RAX: ffffffffffffffda RBX: 00007ffd380b35d0 RCX: 00007f48983f11e7
[   24.451501][  T346] RDX: 0000000000000000 RSI: 00007ffd380b2f10 RDI: 0000000000000005
[   24.451963][  T346] RBP: 0000000000000008 R08: 00000000000000ac R09: 0000000000000000
[   24.452437][  T346] R10: 00007f48982e96f8 R11: 0000000000000246 R12: 00007ffd380b35f0


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