======================================
| [   20.026528][  T314] ip_gre: GRE over IPv4 tunneling driver
| [   20.086728][  T313] ------------[ cut here ]------------
| [ 20.087173][ T313] WARNING: CPU: 1 PID: 313 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   20.087974][  T313] Modules linked in: ip_gre gre sch_ingress vrf veth
[   20.088991][  T313] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.089380][ T313] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 20.089716][ T313] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 1a 63 7b 00       	call   0x7b633b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   20.090974][  T313] RSP: 0018:ffffc900006e7000 EFLAGS: 00010246
[   20.091364][  T313] RAX: 0000000000000000 RBX: ffff888008ad9000 RCX: 0000000000000001
[   20.091995][  T313] RDX: 0000000000000000 RSI: ffffffff8cc9b941 RDI: ffffffff8c4555e0
[   20.092465][  T313] RBP: ffffc900006e70e8 R08: ffff888008ad9218 R09: 0000000000000000
[   20.093074][  T313] R10: ffffc900006e7118 R11: ffffffff8d179160 R12: 1ffff920000dce04
[   20.093545][  T313] R13: 00000000000005b6 R14: ffffc900006e7118 R15: ffff888008ad9218
[   20.094241][  T313] FS:  00007f0c196d0800(0000) GS:ffff8880a7537000(0000) knlGS:0000000000000000
[   20.095005][  T313] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.095395][  T313] CR2: 00007eff64a6b000 CR3: 000000000ba42003 CR4: 0000000000772ef0
[   20.096104][  T313] PKRU: 55555554
[   20.096350][  T313] Call Trace:
[   20.096582][  T313]  <TASK>
[ 20.096969][ T313] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 20.097366][ T313] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.097901][ T313] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 20.098232][ T313] netif_set_mtu (net/core/dev.c:9652) 
[ 20.098556][ T313] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 20.099121][ T313] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 20.099444][ T313] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 20.100267][ T313] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 20.100588][ T313] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 20.101202][ T313] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 20.101519][ T313] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 20.102205][ T313] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 20.102525][ T313] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 20.103144][ T313] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 20.103482][ T313] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 20.104086][ T313] ? __dev_get_by_name (net/core/dev.c:865) 
[ 20.104397][ T313] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.105006][ T313] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.105322][ T313] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 20.105637][ T313] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.106270][ T313] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 20.106608][ T313] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 20.107217][ T313] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.107545][ T313] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 20.108064][ T313] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.108376][ T313] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.108894][ T313] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 20.109228][ T313] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.109560][ T313] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.110094][ T313] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 20.110406][ T313] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.110933][ T313] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 20.111251][ T313] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 20.111555][ T313] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 20.112081][ T313] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 20.112398][ T313] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 20.112859][ T313] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.113172][ T313] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 20.113479][ T313] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 20.113797][ T313] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 20.114125][ T313] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 20.114433][ T313] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 20.114752][ T313] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 20.115142][ T313] ___sys_sendmsg (net/socket.c:2670) 
[ 20.115446][ T313] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 20.115761][ T313] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 20.116070][ T313] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.116453][ T313] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 20.116778][ T313] ? __handle_mm_fault (mm/memory.c:6212) 
[ 20.117092][ T313] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 20.117395][ T313] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 20.117724][ T313] __sys_sendmsg (net/socket.c:2700) 
[ 20.118030][ T313] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 20.118569][ T313] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 20.118897][ T313] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 20.119216][ T313] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.119524][ T313] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.119841][ T313] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.120220][  T313] RIP: 0033:0x7f0c1989d1e7
[ 20.120559][ T313] Code: Unable to access opcode bytes at 0x7f0c1989d1bd.

Code starting with the faulting instruction
===========================================
[   20.120976][  T313] RSP: 002b:00007fff7f0f0bc8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.121442][  T313] RAX: ffffffffffffffda RBX: 00007fff7f0f12f0 RCX: 00007f0c1989d1e7
[   20.121918][  T313] RDX: 0000000000000000 RSI: 00007fff7f0f0c30 RDI: 0000000000000005
[   20.122380][  T313] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   20.122856][  T313] R10: 00007f0c197956f8 R11: 0000000000000246 R12: 00007fff7f0f1310
[   20.123315][  T313] R13: 00000000686e47c1 R14: 0000000000499600 R15: 00007fff7f0f0d1c
| [   22.865145][  T340] ------------[ cut here ]------------
| [ 22.865491][ T340] WARNING: CPU: 3 PID: 340 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   22.866129][  T340] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   22.869113][  T340] Tainted: [W]=WARN
[   22.869348][  T340] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 22.869738][ 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) 
[ 22.870055][ 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
[   22.871201][  T340] RSP: 0018:ffffc90000bb6ef0 EFLAGS: 00010246
[   22.871595][  T340] RAX: 0000000000000000 RBX: ffff88800bbe2000 RCX: 0000000000000001
[   22.872066][  T340] RDX: 0000000000000000 RSI: ffffffff8cc9b941 RDI: ffffffff8c4555e0
[   22.872529][  T340] RBP: ffffc90000bb6fe0 R08: 0000000000000000 R09: 0000000000000000
[   22.873005][  T340] R10: ffffc90000bb7010 R11: ffffffff8daa8918 R12: 1ffff92000176de2
[   22.873462][  T340] R13: 00000000000005dc R14: ffffc90000bb7010 R15: ffff88800bbe2f08
[   22.873932][  T340] FS:  00007f089d9ae800(0000) GS:ffff8880a7637000(0000) knlGS:0000000000000000
[   22.874474][  T340] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.874870][  T340] CR2: 00000000004e5aa8 CR3: 0000000009879001 CR4: 0000000000772ef0
[   22.875435][  T340] PKRU: 55555554
[   22.875682][  T340] Call Trace:
[   22.875916][  T340]  <TASK>
[ 22.876077][ T340] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 22.876411][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.876735][ T340] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 22.877049][ T340] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 22.877436][ T340] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 22.877764][ T340] netif_set_mtu (net/core/dev.c:9652) 
[ 22.878077][ T340] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 22.878446][ T340] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 22.878890][ T340] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 22.879126][ T340] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 22.879542][ T340] br_add_if (net/bridge/br_if.c:697) bridge 
[ 22.879913][ T340] do_set_master (net/core/rtnetlink.c:2948) 
[ 22.880228][ T340] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 22.880545][ T340] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 22.880946][ T340] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 22.881252][ T340] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 22.881578][ T340] ? __kernel_text_address (kernel/extable.c:79) 
[ 22.881900][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.882237][ 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) 
[ 22.882549][ T340] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 22.882957][ T340] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.883268][ T340] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.883577][ T340] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 22.883900][ T340] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 22.884208][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.884526][ T340] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 22.884848][ T340] ? __create_object (mm/kmemleak.c:771) 
[ 22.885160][ T340] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 22.885474][ T340] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 22.885789][ T340] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 22.886185][ T340] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 22.886503][ T340] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 22.886829][ T340] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.887146][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.887464][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.887785][ T340] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 22.888095][ T340] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.888406][ T340] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.888741][ T340] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 22.889058][ T340] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.889375][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.889707][ T340] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 22.890030][ T340] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.890371][ T340] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 22.890703][ T340] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 22.891010][ 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) 
[ 22.891323][ T340] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 22.891639][ T340] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 22.891963][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.892279][ T340] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 22.892594][ T340] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 22.892914][ T340] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 22.893236][ T340] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 22.893552][ T340] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 22.893891][ T340] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 22.894306][ T340] ___sys_sendmsg (net/socket.c:2670) 
[ 22.894612][ T340] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 22.894928][ 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) 
[ 22.895313][ T340] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 22.895626][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.895946][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.896271][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.896646][ 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) 
[ 22.896968][ T340] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.897285][ T340] __sys_sendmsg (net/socket.c:2700) 
[ 22.897590][ T340] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 22.897994][ T340] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 22.898337][ T340] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.898662][ T340] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 22.899006][ T340] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   22.899415][  T340] RIP: 0033:0x7f089db7b1e7
[ 22.899761][ 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)
[   22.900966][  T340] RSP: 002b:00007ffccc7b66f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   22.901452][  T340] RAX: ffffffffffffffda RBX: 00007ffccc7b6e20 RCX: 00007f089db7b1e7
[   22.901924][  T340] RDX: 0000000000000000 RSI: 00007ffccc7b6760 RDI: 0000000000000005
[   22.902389][  T340] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   22.902859][  T340] R10: 000000003f3c2910 R11: 0000000000000246 R12: 0000000000000004
[   22.903331][  T340] R13: 00000000686e47c4 R14: 0000000000499600 R15: 0000000000000000
| [   23.139286][  T342] ------------[ cut here ]------------
| [ 23.139606][ T342] WARNING: CPU: 0 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) 
| [   23.140255][  T342] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.141701][  T342] Tainted: [W]=WARN
[   23.141950][  T342] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.142359][ 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) 
[ 23.142700][ 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
[   23.143879][  T342] RSP: 0018:ffffc90000826ef0 EFLAGS: 00010246
[   23.144295][  T342] RAX: 0000000000000000 RBX: ffff88800bbe2000 RCX: 0000000000000001
[   23.144797][  T342] RDX: 0000000000000000 RSI: ffffffff8cc9b941 RDI: ffffffff8c4555e0
[   23.145299][  T342] RBP: ffffc90000826fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.145842][  T342] R10: ffffc90000827010 R11: ffffffff8daa8918 R12: 1ffff92000104de2
[   23.146341][  T342] R13: 00000000000005dc R14: ffffc90000827010 R15: ffff88800bbe2f08
[   23.146838][  T342] FS:  00007f44b17dc800(0000) GS:ffff8880a74b7000(0000) knlGS:0000000000000000
[   23.147414][  T342] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.147841][  T342] CR2: 00000000004e5ab0 CR3: 000000000ed25005 CR4: 0000000000772ef0
[   23.148329][  T342] PKRU: 55555554
[   23.148572][  T342] Call Trace:
[   23.148826][  T342]  <TASK>
[ 23.148996][ T342] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.149325][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.149660][ T342] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.150008][ T342] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.150415][ T342] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.150755][ T342] netif_set_mtu (net/core/dev.c:9652) 
[ 23.151085][ T342] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.151431][ T342] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.151889][ T342] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.152141][ T342] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.152583][ T342] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.152956][ T342] do_set_master (net/core/rtnetlink.c:2948) 
[ 23.153289][ T342] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.153619][ T342] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.154039][ T342] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.154363][ T342] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.154695][ T342] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.155034][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.155363][ 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) 
[ 23.155700][ T342] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.156106][ T342] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.156488][ T342] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.156822][ T342] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.157147][ T342] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.157481][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.157817][ T342] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.158144][ T342] ? __create_object (mm/kmemleak.c:771) 
[ 23.158474][ T342] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.158812][ T342] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.159139][ T342] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.159546][ T342] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.159927][ T342] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.160261][ T342] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.160587][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.160940][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.161266][ T342] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.161588][ T342] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.161930][ T342] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.162259][ T342] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.162594][ T342] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.162936][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.163266][ T342] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.163590][ T342] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.163926][ T342] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.164263][ T342] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.164584][ 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) 
[ 23.164929][ T342] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.165254][ T342] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.165578][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.165916][ T342] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.166319][ T342] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.166877][ T342] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.167359][ T342] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.167854][ T342] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.168405][ T342] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.169174][ T342] ___sys_sendmsg (net/socket.c:2670) 
[ 23.169572][ T342] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.170092][ 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) 
[ 23.170780][ T342] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.171328][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.171898][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.172457][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.173007][ 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) 
[ 23.173544][ T342] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.174110][ T342] __sys_sendmsg (net/socket.c:2700) 
[ 23.174638][ T342] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.175337][ T342] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.175771][ T342] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.176282][ T342] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.176707][ T342] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.177351][  T342] RIP: 0033:0x7f44b19a91e7
[ 23.177917][ 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)
[   23.179860][  T342] RSP: 002b:00007ffea4b84af8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.180694][  T342] RAX: ffffffffffffffda RBX: 00007ffea4b85220 RCX: 00007f44b19a91e7
[   23.181501][  T342] RDX: 0000000000000000 RSI: 00007ffea4b84b60 RDI: 0000000000000005
[   23.182322][  T342] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.183144][  T342] R10: 0000000010c29910 R11: 0000000000000246 R12: 0000000000000004
[   23.183992][  T342] R13: 00000000686e47c4 R14: 0000000000499600 R15: 0000000000000000
| [   23.595020][  T345] ------------[ cut here ]------------
| [ 23.595367][ T345] WARNING: CPU: 3 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) 
| [   23.595996][  T345] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.597596][  T345] Tainted: [W]=WARN
[   23.597842][  T345] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.598242][ 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) 
[ 23.598563][ 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
[   23.599679][  T345] RSP: 0018:ffffc900005e7000 EFLAGS: 00010246
[   23.600070][  T345] RAX: 0000000000000000 RBX: ffff88800ac8c000 RCX: 0000000000000001
[   23.600557][  T345] RDX: 0000000000000000 RSI: ffffffff8cc9b941 RDI: ffffffff8c4555e0
[   23.601027][  T345] RBP: ffffc900005e70e8 R08: ffff88800ac8c218 R09: 0000000000000000
[   23.601576][  T345] R10: ffffc900005e7118 R11: ffffffff8d179160 R12: 1ffff920000bce04
[   23.602059][  T345] R13: 00000000000005b6 R14: ffffc900005e7118 R15: ffff88800ac8c218
[   23.602523][  T345] FS:  00007f5046b99800(0000) GS:ffff8880a7637000(0000) knlGS:0000000000000000
[   23.603096][  T345] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.603484][  T345] CR2: 0000000000406141 CR3: 0000000005ae0006 CR4: 0000000000772ef0
[   23.603972][  T345] PKRU: 55555554
[   23.604207][  T345] Call Trace:
[   23.604448][  T345]  <TASK>
[ 23.604606][ T345] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 23.605003][ T345] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.605317][ T345] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.605631][ T345] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 23.605953][ T345] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.606290][ T345] netif_set_mtu (net/core/dev.c:9652) 
[ 23.606630][ T345] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.606970][ T345] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 23.607283][ T345] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.607515][ T345] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 23.607837][ T345] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 23.608154][ T345] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 23.608471][ T345] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 23.608867][ T345] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 23.609186][ T345] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 23.609501][ T345] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 23.609825][ T345] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 23.610132][ T345] ? __dev_get_by_name (net/core/dev.c:865) 
[ 23.610443][ T345] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.610763][ T345] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.611078][ T345] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.611396][ T345] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.611716][ T345] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 23.612033][ T345] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.612347][ T345] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.612667][ T345] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.612983][ T345] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.613295][ T345] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.613602][ T345] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.613928][ T345] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.614271][ T345] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.614591][ T345] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.614909][ T345] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.615219][ T345] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.615539][ T345] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.615853][ 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) 
[ 23.616282][ T345] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.616595][ T345] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.616909][ T345] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.617223][ T345] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.617564][ T345] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.617882][ T345] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.618199][ T345] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.618524][ T345] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.618841][ T345] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.619236][ T345] ___sys_sendmsg (net/socket.c:2670) 
[ 23.619544][ T345] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.619865][ T345] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 23.620205][ T345] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.620510][ T345] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 23.620836][ T345] ? __handle_mm_fault (mm/memory.c:6212) 
[ 23.621144][ T345] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 23.621449][ T345] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 23.621791][ T345] __sys_sendmsg (net/socket.c:2700) 
[ 23.622095][ T345] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.622398][ 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) 
[ 23.622720][ 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) 
[ 23.623070][ T345] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.623392][ T345] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.623707][ T345] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.624092][  T345] RIP: 0033:0x7f5046d661e7
[ 23.624441][ 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)
[   23.625553][  T345] RSP: 002b:00007fff73f1fc48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.626035][  T345] RAX: ffffffffffffffda RBX: 00007fff73f20370 RCX: 00007f5046d661e7
[   23.626514][  T345] RDX: 0000000000000000 RSI: 00007fff73f1fcb0 RDI: 0000000000000005
[   23.626987][  T345] RBP: 0000000000000008 R08: 00000000000000ac R09: 0000000000000000
[   23.627448][  T345] R10: 00007f5046c5e6f8 R11: 0000000000000246 R12: 00007fff73f20390
[   23.627921][  T345] R13: 00000000686e47c5 R14: 0000000000499600 R15: 00007fff73f1fd98
| [   24.596366][  T357] ------------[ cut here ]------------
| [ 24.598111][ T357] WARNING: CPU: 0 PID: 357 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) 
| [   24.598838][  T357] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   24.600368][  T357] Tainted: [W]=WARN
[   24.600647][  T357] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 24.601093][ T357] 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) 
[ 24.601466][ T357] 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
[   24.602721][  T357] RSP: 0018:ffffc90000596ef0 EFLAGS: 00010246
[   24.603162][  T357] RAX: 0000000000000000 RBX: ffff888009aa2000 RCX: 0000000000000001
[   24.603698][  T357] RDX: 0000000000000000 RSI: ffffffff8cc9b941 RDI: ffffffff8c4555e0
[   24.604224][  T357] RBP: ffffc90000596fe0 R08: 0000000000000000 R09: 0000000000000000
[   24.604770][  T357] R10: ffffc90000597010 R11: ffffffff8daa8918 R12: 1ffff920000b2de2
[   24.605300][  T357] R13: 00000000000005dc R14: ffffc90000597010 R15: ffff888009aa2f08
[   24.605980][  T357] FS:  00007f9ce0f42800(0000) GS:ffff8880a74b7000(0000) knlGS:0000000000000000
[   24.606629][  T357] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.607248][  T357] CR2: 00000000004e5ac0 CR3: 000000000926d003 CR4: 0000000000772ef0
[   24.607942][  T357] PKRU: 55555554
[   24.608206][  T357] Call Trace:
[   24.608483][  T357]  <TASK>
[ 24.608663][ T357] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 24.609180][ T357] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.609535][ T357] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 24.609909][ T357] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 24.610353][ T357] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 24.610712][ T357] netif_set_mtu (net/core/dev.c:9652) 
[ 24.611069][ T357] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 24.611430][ T357] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 24.611916][ T357] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 24.612185][ T357] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 24.612655][ T357] br_add_if (net/bridge/br_if.c:697) bridge 
[ 24.613062][ T357] do_set_master (net/core/rtnetlink.c:2948) 
[ 24.613429][ T357] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 24.613794][ T357] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 24.614239][ T357] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 24.614585][ T357] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 24.614942][ T357] ? __kernel_text_address (kernel/extable.c:79) 
[ 24.615316][ T357] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.615668][ T357] ? __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) 
[ 24.616039][ T357] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 24.616494][ T357] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.616858][ T357] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.617208][ T357] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 24.617558][ T357] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 24.617919][ T357] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.618271][ T357] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 24.618621][ T357] ? __create_object (mm/kmemleak.c:771) 
[ 24.618985][ T357] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 24.619353][ T357] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 24.619716][ T357] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 24.620149][ T357] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 24.620507][ T357] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 24.620875][ T357] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.621226][ T357] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.621594][ T357] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.621957][ T357] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 24.622311][ T357] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.622663][ T357] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.623019][ T357] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 24.623370][ T357] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.623736][ T357] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.624092][ T357] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 24.624445][ T357] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.624819][ T357] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 24.625211][ T357] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 24.625571][ T357] ? 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) 
[ 24.625934][ T357] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 24.626308][ T357] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 24.626662][ T357] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.627029][ T357] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 24.627397][ T357] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 24.627758][ T357] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 24.628130][ T357] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 24.628491][ T357] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 24.628856][ T357] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 24.629315][ T357] ___sys_sendmsg (net/socket.c:2670) 
[ 24.629665][ T357] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 24.630040][ T357] ? __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) 
[ 24.630489][ T357] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 24.630852][ T357] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.631216][ T357] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.631575][ T357] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.631946][ T357] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 24.632302][ T357] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.632665][ T357] __sys_sendmsg (net/socket.c:2700) 
[ 24.633029][ T357] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 24.633486][ T357] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 24.633861][ T357] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.634214][ T357] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 24.634590][ T357] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   24.635049][  T357] RIP: 0033:0x7f9ce110f1e7
[ 24.635415][ T357] 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)
[   24.636715][  T357] RSP: 002b:00007ffeba235898 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   24.637254][  T357] RAX: ffffffffffffffda RBX: 00007ffeba235fc0 RCX: 00007f9ce110f1e7
[   24.637810][  T357] RDX: 0000000000000000 RSI: 00007ffeba235900 RDI: 0000000000000005
[   24.638343][  T357] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   24.638889][  T357] R10: 000000003b63c910 R11: 0000000000000246 R12: 0000000000000004


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