======================================
| [   20.195697][  T312] ip_gre: GRE over IPv4 tunneling driver
| [   20.258677][  T311] ------------[ cut here ]------------
| [ 20.259474][ T311] WARNING: CPU: 3 PID: 311 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   20.260672][  T311] Modules linked in: ip_gre gre sch_ingress vrf veth
[   20.262554][  T311] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.263300][ T311] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 20.263922][ T311] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 1a 63 7b 00       	call   0x7b633b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   20.266025][  T311] RSP: 0018:ffffc900005b7000 EFLAGS: 00010246
[   20.266798][  T311] RAX: 0000000000000000 RBX: ffff88800bb64000 RCX: 0000000000000001
[   20.267738][  T311] RDX: 0000000000000000 RSI: ffffffffb809b941 RDI: ffffffffb78555e0
[   20.268663][  T311] RBP: ffffc900005b70e8 R08: ffff88800bb64218 R09: 0000000000000000
[   20.269589][  T311] R10: ffffc900005b7118 R11: ffffffffb8579160 R12: 1ffff920000b6e04
[   20.270754][  T311] R13: 00000000000005b6 R14: ffffc900005b7118 R15: ffff88800bb64218
[   20.271431][  T311] FS:  00007feea3ebd800(0000) GS:ffff88807c237000(0000) knlGS:0000000000000000
[   20.272481][  T311] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.272960][  T311] CR2: 0000000000436890 CR3: 000000000b881005 CR4: 0000000000772ef0
[   20.273494][  T311] PKRU: 55555554
[   20.273926][  T311] Call Trace:
[   20.274306][  T311]  <TASK>
[ 20.274603][ T311] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 20.275365][ T311] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.275982][ T311] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 20.276588][ T311] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 20.277231][ T311] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 20.277875][ T311] netif_set_mtu (net/core/dev.c:9652) 
[ 20.278487][ T311] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 20.279121][ T311] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 20.279722][ T311] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 20.280194][ T311] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 20.280796][ T311] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 20.281430][ T311] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 20.282055][ T311] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 20.282804][ T311] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 20.283436][ T311] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 20.284045][ T311] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 20.284405][ T311] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 20.284775][ T311] ? __dev_get_by_name (net/core/dev.c:865) 
[ 20.285130][ T311] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.285498][ T311] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.285866][ T311] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 20.286206][ T311] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.286561][ T311] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 20.286931][ T311] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 20.287578][ T311] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.287958][ T311] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 20.288297][ T311] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.288652][ T311] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.289010][ T311] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 20.289350][ T311] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.289711][ T311] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.290069][ T311] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 20.290418][ T311] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.290773][ T311] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 20.291139][ T311] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 20.291503][ T311] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 20.291856][ T311] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 20.292204][ T311] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 20.293027][ T311] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.293379][ T311] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 20.295081][ T311] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 20.295671][ T311] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 20.296260][ T311] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 20.296635][ T311] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 20.297006][ T311] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 20.297455][ T311] ___sys_sendmsg (net/socket.c:2670) 
[ 20.297808][ T311] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 20.298159][ T311] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 20.298563][ T311] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.299150][ T311] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 20.299525][ T311] ? __handle_mm_fault (mm/memory.c:6212) 
[ 20.299893][ T311] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 20.300241][ T311] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 20.300854][ T311] __sys_sendmsg (net/socket.c:2700) 
[ 20.301203][ T311] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 20.301557][ T311] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 20.301937][ T311] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 20.302288][ T311] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.302646][ T311] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.303009][ T311] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.303443][  T311] RIP: 0033:0x7feea408a1e7
[ 20.303832][ T311] Code: Unable to access opcode bytes at 0x7feea408a1bd.

Code starting with the faulting instruction
===========================================
[   20.304284][  T311] RSP: 002b:00007ffc6a2886a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.308322][  T311] RAX: ffffffffffffffda RBX: 00007ffc6a288dd0 RCX: 00007feea408a1e7
[   20.308866][  T311] RDX: 0000000000000000 RSI: 00007ffc6a288710 RDI: 0000000000000005
[   20.309383][  T311] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   20.310202][  T311] R10: 00007feea3f826f8 R11: 0000000000000246 R12: 00007ffc6a288df0
[   20.310976][  T311] R13: 00000000686e10bc R14: 0000000000499600 R15: 00007ffc6a2887fc
| [   23.195832][  T339] ------------[ cut here ]------------
| [ 23.196193][ T339] WARNING: CPU: 2 PID: 339 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) 
| [   23.197235][  T339] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.198763][  T339] Tainted: [W]=WARN
[   23.199062][  T339] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.199483][ T339] 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) 
[ 23.199849][ T339] 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
[   23.201011][  T339] RSP: 0018:ffffc900005b6ef0 EFLAGS: 00010246
[   23.201432][  T339] RAX: 0000000000000000 RBX: ffff88800a2c2000 RCX: 0000000000000001
[   23.201942][  T339] RDX: 0000000000000000 RSI: ffffffffb809b941 RDI: ffffffffb78555e0
[   23.202432][  T339] RBP: ffffc900005b6fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.202933][  T339] R10: ffffc900005b7010 R11: ffffffffb8ea8918 R12: 1ffff920000b6de2
[   23.203425][  T339] R13: 00000000000005dc R14: ffffc900005b7010 R15: ffff88800a2c2f08
[   23.203927][  T339] FS:  00007fc673dea800(0000) GS:ffff88807c1b7000(0000) knlGS:0000000000000000
[   23.204507][  T339] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.204946][  T339] CR2: 00000000004e5aa8 CR3: 000000000b93c003 CR4: 0000000000772ef0
[   23.205443][  T339] PKRU: 55555554
[   23.205698][  T339] Call Trace:
[   23.205961][  T339]  <TASK>
[ 23.206141][ T339] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.206485][ T339] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.206843][ T339] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.207191][ T339] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.207616][ T339] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.207962][ T339] netif_set_mtu (net/core/dev.c:9652) 
[ 23.208297][ T339] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.208639][ T339] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.209106][ T339] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.209365][ T339] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.209805][ T339] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.210188][ T339] do_set_master (net/core/rtnetlink.c:2948) 
[ 23.210527][ T339] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.210872][ T339] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.211287][ T339] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.211624][ T339] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.211969][ T339] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.212303][ T339] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.212636][ T339] ? __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) 
[ 23.212979][ T339] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.213385][ T339] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.213719][ T339] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.214064][ T339] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.214397][ T339] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.214731][ T339] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.215075][ T339] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.215404][ T339] ? __create_object (mm/kmemleak.c:771) 
[ 23.215746][ T339] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.216088][ T339] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.216428][ T339] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.216846][ T339] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.217200][ T339] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.217537][ T339] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.217880][ T339] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.218224][ T339] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.218557][ T339] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.218894][ T339] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.219236][ T339] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.219564][ T339] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.219909][ T339] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.220245][ T339] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.220584][ T339] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.220929][ T339] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.221268][ T339] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.221615][ T339] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.221960][ T339] ? 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) 
[ 23.222295][ T339] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.222634][ T339] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.222974][ T339] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.223313][ T339] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.223648][ T339] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.223997][ T339] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.224371][ T339] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.224711][ T339] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.225059][ T339] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.225480][ T339] ___sys_sendmsg (net/socket.c:2670) 
[ 23.225807][ T339] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.226151][ T339] ? __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) 
[ 23.226575][ T339] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.226918][ T339] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.227269][ T339] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.227607][ T339] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.227949][ T339] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 23.228280][ T339] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.228619][ T339] __sys_sendmsg (net/socket.c:2700) 
[ 23.228959][ T339] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.229376][ T339] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.229720][ T339] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.230071][ T339] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.230407][ T339] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.230814][  T339] RIP: 0033:0x7fc673fb71e7
[ 23.231171][ T339] 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)
[   23.232341][  T339] RSP: 002b:00007ffe4008ee78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.232849][  T339] RAX: ffffffffffffffda RBX: 00007ffe4008f5a0 RCX: 00007fc673fb71e7
[   23.233342][  T339] RDX: 0000000000000000 RSI: 00007ffe4008eee0 RDI: 0000000000000005
[   23.233851][  T339] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.234344][  T339] R10: 00000000310f2910 R11: 0000000000000246 R12: 0000000000000004
[   23.234847][  T339] R13: 00000000686e10bf R14: 0000000000499600 R15: 0000000000000000
| [   23.511986][  T341] ------------[ cut here ]------------
| [ 23.512345][ T341] WARNING: CPU: 2 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) 
| [   23.513084][  T341] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.514515][  T341] Tainted: [W]=WARN
[   23.514777][  T341] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.515198][ 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) 
[ 23.515537][ 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
[   23.516695][  T341] RSP: 0018:ffffc90000606ef0 EFLAGS: 00010246
[   23.517137][  T341] RAX: 0000000000000000 RBX: ffff88800a2c2000 RCX: 0000000000000001
[   23.517626][  T341] RDX: 0000000000000000 RSI: ffffffffb809b941 RDI: ffffffffb78555e0
[   23.518124][  T341] RBP: ffffc90000606fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.518615][  T341] R10: ffffc90000607010 R11: ffffffffb8ea8918 R12: 1ffff920000c0de2
[   23.519125][  T341] R13: 00000000000005dc R14: ffffc90000607010 R15: ffff88800a2c2f08
[   23.519613][  T341] FS:  00007f0156693800(0000) GS:ffff88807c1b7000(0000) knlGS:0000000000000000
[   23.520193][  T341] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.520608][  T341] CR2: 00000000004e5ab0 CR3: 000000000c475004 CR4: 0000000000772ef0
[   23.521117][  T341] PKRU: 55555554
[   23.521374][  T341] Call Trace:
[   23.521626][  T341]  <TASK>
[ 23.521806][ T341] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.522152][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.522493][ T341] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.522835][ T341] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.523253][ T341] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.523591][ T341] netif_set_mtu (net/core/dev.c:9652) 
[ 23.523947][ T341] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.524296][ T341] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.524748][ T341] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.525018][ T341] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.525461][ T341] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.525846][ T341] do_set_master (net/core/rtnetlink.c:2948) 
[ 23.526194][ T341] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.526533][ T341] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.526965][ T341] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.527305][ T341] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.527636][ T341] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.527987][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.528321][ 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) 
[ 23.528675][ T341] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.529092][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.529428][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.529757][ T341] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.530096][ T341] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.530437][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.530776][ T341] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.531115][ T341] ? __create_object (mm/kmemleak.c:771) 
[ 23.531461][ T341] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.531792][ T341] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.532136][ T341] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.532546][ T341] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.532893][ T341] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.533228][ T341] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.533560][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.533915][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.534246][ T341] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.534575][ T341] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.534918][ T341] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.535250][ T341] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.535581][ T341] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.535926][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.536267][ T341] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.536609][ T341] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.536963][ T341] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.537315][ T341] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.537646][ 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) 
[ 23.537989][ T341] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.538326][ T341] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.538659][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.539015][ T341] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.539350][ T341] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.539680][ T341] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.540027][ T341] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.540366][ T341] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.540699][ T341] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.541134][ T341] ___sys_sendmsg (net/socket.c:2670) 
[ 23.541473][ T341] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.541806][ 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) 
[ 23.542228][ T341] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.542560][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.542905][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.543240][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.543572][ 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) 
[ 23.543920][ T341] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.544262][ T341] __sys_sendmsg (net/socket.c:2700) 
[ 23.544595][ T341] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.545015][ T341] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.545361][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.545697][ T341] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.546044][ T341] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.546460][  T341] RIP: 0033:0x7f01568601e7
[ 23.546802][ 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)
[   23.547972][  T341] RSP: 002b:00007ffc3f2a1658 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.548473][  T341] RAX: ffffffffffffffda RBX: 00007ffc3f2a1d80 RCX: 00007f01568601e7
[   23.548981][  T341] RDX: 0000000000000000 RSI: 00007ffc3f2a16c0 RDI: 0000000000000005
[   23.549472][  T341] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.549971][  T341] R10: 0000000035320910 R11: 0000000000000246 R12: 0000000000000004
[   23.550460][  T341] R13: 00000000686e10c0 R14: 0000000000499600 R15: 0000000000000000
| [   24.009749][  T344] ------------[ cut here ]------------
| [ 24.010172][ T344] WARNING: CPU: 2 PID: 344 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) 
| [   24.010804][  T344] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   24.012230][  T344] Tainted: [W]=WARN
[   24.012475][  T344] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 24.012887][ T344] 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) 
[ 24.013218][ T344] 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
[   24.014354][  T344] RSP: 0018:ffffc900005d7000 EFLAGS: 00010246
[   24.014761][  T344] RAX: 0000000000000000 RBX: ffff88800bab1000 RCX: 0000000000000001
[   24.015249][  T344] RDX: 0000000000000000 RSI: ffffffffb809b941 RDI: ffffffffb78555e0
[   24.015720][  T344] RBP: ffffc900005d70e8 R08: ffff88800bab1218 R09: 0000000000000000
[   24.016204][  T344] R10: ffffc900005d7118 R11: ffffffffb8579160 R12: 1ffff920000bae04
[   24.016678][  T344] R13: 00000000000005b6 R14: ffffc900005d7118 R15: ffff88800bab1218
[   24.017186][  T344] FS:  00007fc71679a800(0000) GS:ffff88807c1b7000(0000) knlGS:0000000000000000
[   24.017736][  T344] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.018173][  T344] CR2: 0000000000436890 CR3: 0000000005189002 CR4: 0000000000772ef0
[   24.018655][  T344] PKRU: 55555554
[   24.018910][  T344] Call Trace:
[   24.019154][  T344]  <TASK>
[ 24.019324][ T344] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 24.019724][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.020057][ T344] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 24.020380][ T344] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 24.020699][ T344] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 24.021046][ T344] netif_set_mtu (net/core/dev.c:9652) 
[ 24.021373][ T344] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 24.021710][ T344] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 24.022052][ T344] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 24.022299][ T344] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 24.022618][ T344] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 24.022952][ T344] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 24.023274][ T344] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 24.023666][ T344] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 24.024009][ T344] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 24.024332][ T344] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 24.024650][ T344] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 24.024977][ T344] ? __dev_get_by_name (net/core/dev.c:865) 
[ 24.025294][ T344] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 24.025615][ T344] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 24.025958][ T344] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 24.026276][ T344] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 24.026600][ T344] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 24.026950][ T344] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 24.027276][ T344] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.027605][ T344] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 24.027930][ T344] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.028251][ T344] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.028567][ T344] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 24.028901][ T344] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.029222][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.029547][ T344] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 24.029879][ T344] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.030200][ T344] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 24.030530][ T344] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 24.030858][ T344] ? 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) 
[ 24.031182][ T344] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 24.031500][ T344] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 24.031831][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.032155][ T344] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 24.032474][ T344] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 24.032792][ T344] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 24.033137][ T344] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 24.033460][ T344] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 24.033786][ T344] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 24.034205][ T344] ___sys_sendmsg (net/socket.c:2670) 
[ 24.034528][ T344] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 24.034853][ T344] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 24.035177][ T344] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 24.035494][ T344] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 24.035829][ T344] ? __handle_mm_fault (mm/memory.c:6212) 
[ 24.036151][ T344] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 24.036469][ T344] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 24.036805][ T344] __sys_sendmsg (net/socket.c:2700) 
[ 24.037153][ T344] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 24.037470][ T344] ? 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) 
[ 24.037796][ T344] ? 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) 
[ 24.038131][ T344] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.038457][ T344] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 24.038780][ T344] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   24.039185][  T344] RIP: 0033:0x7fc7169671e7
[ 24.039515][ T344] 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)
[   24.040619][  T344] RSP: 002b:00007ffe665fd128 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   24.041109][  T344] RAX: ffffffffffffffda RBX: 00007ffe665fd850 RCX: 00007fc7169671e7
[   24.041581][  T344] RDX: 0000000000000000 RSI: 00007ffe665fd190 RDI: 0000000000000005
[   24.042064][  T344] RBP: 0000000000000008 R08: 00000000000000ac R09: 0000000000000000
[   24.042533][  T344] R10: 00007fc71685f6f8 R11: 0000000000000246 R12: 00007ffe665fd870
[   24.043017][  T344] R13: 00000000686e10c0 R14: 0000000000499600 R15: 00007ffe665fd278
| [   25.369767][  T360] ------------[ cut here ]------------
| [ 25.370117][ T360] WARNING: CPU: 0 PID: 360 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) 
| [   25.370726][  T360] Modules linked in: 8021q bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   25.372696][  T360] Tainted: [W]=WARN
[   25.372944][  T360] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 25.373324][ T360] 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) 
[ 25.373637][ T360] 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
[   25.374732][  T360] RSP: 0018:ffffc900005b6ef0 EFLAGS: 00010246
[   25.375130][  T360] RAX: 0000000000000000 RBX: ffff88801071a000 RCX: 0000000000000001
[   25.375593][  T360] RDX: 0000000000000000 RSI: ffffffffb809b941 RDI: ffffffffb78555e0
[   25.376063][  T360] RBP: ffffc900005b6fe0 R08: 0000000000000000 R09: 0000000000000000
[   25.376519][  T360] R10: ffffc900005b7010 R11: ffffffffb8ea8918 R12: 1ffff920000b6de2
[   25.377000][  T360] R13: 00000000000005dc R14: ffffc900005b7010 R15: ffff88801071af08
[   25.377457][  T360] FS:  00007f493b995800(0000) GS:ffff88807c0b7000(0000) knlGS:0000000000000000
[   25.377997][  T360] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   25.378382][  T360] CR2: 00000000004e6898 CR3: 000000000e453004 CR4: 0000000000772ef0
[   25.378853][  T360] PKRU: 55555554
[   25.379085][  T360] Call Trace:
[   25.379317][  T360]  <TASK>
[ 25.379477][ T360] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 25.379786][ T360] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 25.380108][ T360] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 25.380417][ T360] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 25.380801][ T360] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 25.381117][ T360] netif_set_mtu (net/core/dev.c:9652) 
[ 25.381431][ T360] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 25.381749][ T360] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 25.382182][ T360] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 25.382416][ T360] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 25.382837][ T360] br_add_if (net/bridge/br_if.c:697) bridge 
[ 25.383186][ T360] do_set_master (net/core/rtnetlink.c:2948) 
[ 25.383505][ T360] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 25.383825][ T360] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 25.384221][ T360] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 25.384527][ T360] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 25.384849][ T360] ? __kernel_text_address (kernel/extable.c:79) 
[ 25.385164][ T360] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 25.385475][ T360] ? __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) 
[ 25.385789][ T360] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 25.386179][ T360] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 25.386492][ T360] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 25.386799][ T360] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 25.387126][ T360] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 25.387436][ T360] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 25.387743][ T360] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 25.388055][ T360] ? __create_object (mm/kmemleak.c:771) 
[ 25.388376][ T360] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 25.388686][ T360] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 25.389004][ T360] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 25.389388][ T360] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 25.389702][ T360] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 25.390037][ T360] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 25.390344][ T360] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 25.390665][ T360] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 25.390987][ T360] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 25.391293][ T360] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 25.391605][ T360] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 25.391921][ T360] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 25.392234][ T360] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 25.392546][ T360] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 25.392867][ T360] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 25.393181][ T360] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 25.393489][ T360] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 25.393810][ T360] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 25.394127][ T360] ? 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) 
[ 25.394435][ T360] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 25.394747][ T360] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 25.395066][ T360] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 25.395398][ T360] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 25.395722][ T360] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 25.396043][ T360] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 25.396358][ T360] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 25.396671][ T360] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 25.397003][ T360] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 25.397410][ T360] ___sys_sendmsg (net/socket.c:2670) 
[ 25.397717][ T360] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 25.398043][ T360] ? __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) 
[ 25.398430][ T360] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 25.398746][ T360] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 25.399067][ T360] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 25.399385][ T360] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 25.399698][ T360] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 25.400016][ T360] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 25.400335][ T360] __sys_sendmsg (net/socket.c:2700) 
[ 25.400647][ T360] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 25.401044][ T360] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 25.401369][ T360] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 25.401689][ T360] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 25.402010][ T360] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   25.402394][  T360] RIP: 0033:0x7f493bb621e7
[ 25.402717][ T360] 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)
[   25.403833][  T360] RSP: 002b:00007fffeb6349c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   25.404297][  T360] RAX: ffffffffffffffda RBX: 00007fffeb6350f0 RCX: 00007f493bb621e7
[   25.404756][  T360] RDX: 0000000000000000 RSI: 00007fffeb634a30 RDI: 0000000000000005
[   25.405238][  T360] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   25.405704][  T360] R10: 0000000017def910 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