======================================
| [   20.020419][  T314] ip_gre: GRE over IPv4 tunneling driver
| [   20.070275][  T313] ------------[ cut here ]------------
| [ 20.070926][ T313] WARNING: CPU: 2 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) 
| [   20.071571][  T313] Modules linked in: ip_gre gre sch_ingress vrf veth
[   20.072603][  T313] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.073037][ 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) 
[ 20.073382][ 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
[   20.074517][  T313] RSP: 0018:ffffc900005b7000 EFLAGS: 00010246
[   20.074924][  T313] RAX: 0000000000000000 RBX: ffff888007efc000 RCX: 0000000000000001
[   20.075595][  T313] RDX: 0000000000000000 RSI: ffffffffa489b941 RDI: ffffffffa40555e0
[   20.076081][  T313] RBP: ffffc900005b70e8 R08: ffff888007efc218 R09: 0000000000000000
[   20.076565][  T313] R10: ffffc900005b7118 R11: ffffffffa4d79160 R12: 1ffff920000b6e04
[   20.077042][  T313] R13: 00000000000005b6 R14: ffffc900005b7118 R15: ffff888007efc218
[   20.077525][  T313] FS:  00007f4e3da97800(0000) GS:ffff88808f9b7000(0000) knlGS:0000000000000000
[   20.078079][  T313] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.078494][  T313] CR2: 00007f1697f593b8 CR3: 0000000004da3001 CR4: 0000000000772ef0
[   20.078972][  T313] PKRU: 55555554
[   20.079224][  T313] Call Trace:
[   20.079478][  T313]  <TASK>
[ 20.079651][ T313] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 20.080061][ T313] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.080394][ T313] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 20.080717][ T313] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 20.081043][ T313] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 20.081377][ T313] netif_set_mtu (net/core/dev.c:9652) 
[ 20.081705][ T313] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 20.082034][ T313] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 20.082364][ T313] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 20.082611][ T313] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 20.082932][ T313] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 20.083266][ T313] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 20.083601][ T313] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 20.083995][ T313] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 20.084323][ T313] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 20.084652][ T313] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 20.084975][ T313] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 20.085328][ T313] ? __dev_get_by_name (net/core/dev.c:865) 
[ 20.085662][ T313] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.085986][ T313] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.086328][ T313] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 20.086894][ T313] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.087441][ T313] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 20.087792][ T313] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 20.088132][ T313] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.088492][ T313] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 20.088833][ T313] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.089173][ T313] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.089521][ T313] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 20.089880][ T313] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.090222][ T313] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.090573][ T313] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 20.090911][ T313] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.091251][ T313] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 20.091613][ T313] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 20.091951][ 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) 
[ 20.092287][ T313] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 20.092633][ T313] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 20.092967][ T313] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.093307][ T313] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 20.093654][ T313] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 20.094001][ T313] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 20.094342][ T313] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 20.094694][ T313] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 20.095030][ T313] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 20.095470][ T313] ___sys_sendmsg (net/socket.c:2670) 
[ 20.095806][ T313] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 20.096142][ T313] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 20.096501][ T313] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.096834][ T313] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 20.097174][ T313] ? __handle_mm_fault (mm/memory.c:6212) 
[ 20.097521][ T313] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 20.097857][ T313] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 20.098210][ T313] __sys_sendmsg (net/socket.c:2700) 
[ 20.098571][ T313] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 20.098908][ 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) 
[ 20.099258][ 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) 
[ 20.099606][ T313] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.099983][ T313] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.100319][ T313] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.100751][  T313] RIP: 0033:0x7f4e3dc641e7
[ 20.101112][ T313] Code: Unable to access opcode bytes at 0x7f4e3dc641bd.

Code starting with the faulting instruction
===========================================
[   20.101554][  T313] RSP: 002b:00007ffd5b8660f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.102059][  T313] RAX: ffffffffffffffda RBX: 00007ffd5b866820 RCX: 00007f4e3dc641e7
[   20.102567][  T313] RDX: 0000000000000000 RSI: 00007ffd5b866160 RDI: 0000000000000005
[   20.103070][  T313] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   20.104677][  T313] R10: 00007f4e3db5c6f8 R11: 0000000000000246 R12: 00007ffd5b866840
[   20.105184][  T313] R13: 00000000686e131a R14: 0000000000499600 R15: 00007ffd5b86624c
| [   23.054452][  T340] ------------[ cut here ]------------
| [ 23.054797][ T340] WARNING: CPU: 1 PID: 340 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   23.055499][  T340] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.057027][  T340] Tainted: [W]=WARN
[   23.057284][  T340] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.059291][ T340] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 23.059787][ T340] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 1a 63 7b 00       	call   0x7b633b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   23.061031][  T340] RSP: 0018:ffffc90000586ef0 EFLAGS: 00010246
[   23.061473][  T340] RAX: 0000000000000000 RBX: ffff888011c02000 RCX: 0000000000000001
[   23.061955][  T340] RDX: 0000000000000000 RSI: ffffffffa489b941 RDI: ffffffffa40555e0
[   23.062462][  T340] RBP: ffffc90000586fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.062949][  T340] R10: ffffc90000587010 R11: ffffffffa56a8918 R12: 1ffff920000b0de2
[   23.063456][  T340] R13: 00000000000005dc R14: ffffc90000587010 R15: ffff888011c02f08
[   23.063944][  T340] FS:  00007f510af50800(0000) GS:ffff88808f937000(0000) knlGS:0000000000000000
[   23.064537][  T340] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.064942][  T340] CR2: 00000000004e5aa8 CR3: 0000000010417001 CR4: 0000000000772ef0
[   23.065453][  T340] PKRU: 55555554
[   23.065697][  T340] Call Trace:
[   23.065936][  T340]  <TASK>
[ 23.066101][ T340] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.066446][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.066775][ T340] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.067095][ T340] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.067551][ T340] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.067882][ T340] netif_set_mtu (net/core/dev.c:9652) 
[ 23.068223][ T340] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.068575][ T340] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.069036][ T340] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.069296][ T340] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.069745][ T340] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.070136][ T340] do_set_master (net/core/rtnetlink.c:2948) 
[ 23.070699][ T340] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.071025][ T340] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.071465][ T340] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.071786][ T340] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.072108][ T340] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.072468][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.072803][ T340] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113) 
[ 23.073125][ T340] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.073563][ T340] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.073891][ T340] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.074217][ T340] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.074555][ T340] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.074882][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.075213][ T340] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.075561][ T340] ? __create_object (mm/kmemleak.c:771) 
[ 23.075887][ T340] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.076209][ T340] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.076564][ T340] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.076964][ T340] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.077291][ T340] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.077638][ T340] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.077964][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.078289][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.078633][ T340] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.078951][ T340] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.079271][ T340] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.079633][ T340] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.079978][ T340] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.080312][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.080673][ T340] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.080996][ T340] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.081323][ T340] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.081682][ T340] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.082005][ T340] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 23.082331][ T340] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.082690][ T340] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.083010][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.083336][ T340] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.083681][ T340] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.084004][ T340] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.084331][ T340] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.084686][ T340] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.085010][ T340] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.085434][ T340] ___sys_sendmsg (net/socket.c:2670) 
[ 23.085793][ T340] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.086117][ T340] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3096) 
[ 23.086530][ T340] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.086873][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.087203][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.087535][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.087880][ T340] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 23.088202][ T340] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.088553][ T340] __sys_sendmsg (net/socket.c:2700) 
[ 23.088890][ T340] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.089292][ T340] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.089636][ T340] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.089982][ T340] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.090315][ T340] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.090735][  T340] RIP: 0033:0x7f510b11d1e7
[ 23.091074][ T340] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   23.092259][  T340] RSP: 002b:00007ffec7877fa8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.092785][  T340] RAX: ffffffffffffffda RBX: 00007ffec78786d0 RCX: 00007f510b11d1e7
[   23.093269][  T340] RDX: 0000000000000000 RSI: 00007ffec7878010 RDI: 0000000000000005
[   23.093761][  T340] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.094256][  T340] R10: 0000000009757910 R11: 0000000000000246 R12: 0000000000000004
[   23.094750][  T340] R13: 00000000686e131d R14: 0000000000499600 R15: 0000000000000000
| [   23.335208][  T342] ------------[ cut here ]------------
| [ 23.335563][ 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) 
| [   23.336217][  T342] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.338087][  T342] Tainted: [W]=WARN
[   23.338330][  T342] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.338944][ 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) 
[ 23.339284][ 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
[   23.340626][  T342] RSP: 0018:ffffc90000576ef0 EFLAGS: 00010246
[   23.341053][  T342] RAX: 0000000000000000 RBX: ffff888011c02000 RCX: 0000000000000001
[   23.341555][  T342] RDX: 0000000000000000 RSI: ffffffffa489b941 RDI: ffffffffa40555e0
[   23.342056][  T342] RBP: ffffc90000576fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.342546][  T342] R10: ffffc90000577010 R11: ffffffffa56a8918 R12: 1ffff920000aede2
[   23.343040][  T342] R13: 00000000000005dc R14: ffffc90000577010 R15: ffff888011c02f08
[   23.343531][  T342] FS:  00007febe824b800(0000) GS:ffff88808f8b7000(0000) knlGS:0000000000000000
[   23.344126][  T342] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.344539][  T342] CR2: 00000000004e5ab0 CR3: 0000000008dad003 CR4: 0000000000772ef0
[   23.345022][  T342] PKRU: 55555554
[   23.345278][  T342] Call Trace:
[   23.345529][  T342]  <TASK>
[ 23.345698][ T342] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.346018][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.346370][ T342] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.346703][ T342] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.347117][ T342] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.347451][ T342] netif_set_mtu (net/core/dev.c:9652) 
[ 23.347773][ T342] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.348106][ T342] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.348576][ T342] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.348828][ T342] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.349279][ T342] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.349655][ T342] do_set_master (net/core/rtnetlink.c:2948) 
[ 23.349987][ T342] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.350347][ T342] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.350763][ T342] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.351089][ T342] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.351458][ T342] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.351786][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.352108][ 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) 
[ 23.352471][ T342] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.352872][ T342] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.353194][ T342] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.353537][ T342] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.353861][ T342] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.354182][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.354530][ T342] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.354853][ T342] ? __create_object (mm/kmemleak.c:771) 
[ 23.355171][ T342] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.355518][ T342] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.355838][ T342] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.356233][ T342] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.356605][ T342] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.356934][ T342] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.357250][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.357598][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.357920][ T342] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.358239][ T342] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.358586][ T342] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.358911][ T342] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.359233][ T342] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.359584][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.359925][ T342] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.360250][ T342] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.360596][ T342] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.360929][ T342] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.361249][ 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) 
[ 23.361598][ T342] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.361924][ T342] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.362244][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.362608][ T342] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.362944][ T342] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.363267][ T342] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.363619][ T342] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.363949][ T342] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.364268][ T342] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.364700][ T342] ___sys_sendmsg (net/socket.c:2670) 
[ 23.365020][ T342] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.365340][ 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) 
[ 23.365765][ T342] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.366091][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.366430][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.366773][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.367096][ 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) 
[ 23.367424][ T342] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.367762][ T342] __sys_sendmsg (net/socket.c:2700) 
[ 23.368082][ T342] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.368488][ T342] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.368862][ T342] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.369184][ T342] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.369514][ T342] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.369942][  T342] RIP: 0033:0x7febe84181e7
[ 23.370273][ 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)
[   23.371460][  T342] RSP: 002b:00007ffca530bc68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.371962][  T342] RAX: ffffffffffffffda RBX: 00007ffca530c390 RCX: 00007febe84181e7
[   23.372454][  T342] RDX: 0000000000000000 RSI: 00007ffca530bcd0 RDI: 0000000000000005
[   23.372944][  T342] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.373440][  T342] R10: 00000000353f3910 R11: 0000000000000246 R12: 0000000000000004
[   23.373946][  T342] R13: 00000000686e131e R14: 0000000000499600 R15: 0000000000000000
| [   23.783214][  T345] ------------[ cut here ]------------
| [ 23.783616][ T345] WARNING: CPU: 1 PID: 345 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   23.784297][  T345] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.785772][  T345] Tainted: [W]=WARN
[   23.786020][  T345] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.786439][ 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) 
[ 23.786774][ 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
[   23.787938][  T345] RSP: 0018:ffffc90000837000 EFLAGS: 00010246
[   23.788392][  T345] RAX: 0000000000000000 RBX: ffff8880077e9000 RCX: 0000000000000001
[   23.788888][  T345] RDX: 0000000000000000 RSI: ffffffffa489b941 RDI: ffffffffa40555e0
[   23.789413][  T345] RBP: ffffc900008370e8 R08: ffff8880077e9218 R09: 0000000000000000
[   23.789909][  T345] R10: ffffc90000837118 R11: ffffffffa4d79160 R12: 1ffff92000106e04
[   23.790404][  T345] R13: 00000000000005b6 R14: ffffc90000837118 R15: ffff8880077e9218
[   23.790894][  T345] FS:  00007f4327357800(0000) GS:ffff88808f937000(0000) knlGS:0000000000000000
[   23.791479][  T345] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.791880][  T345] CR2: 0000561a8e475dec CR3: 0000000005143003 CR4: 0000000000772ef0
[   23.792408][  T345] PKRU: 55555554
[   23.792653][  T345] Call Trace:
[   23.792901][  T345]  <TASK>
[ 23.793064][ T345] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 23.793477][ T345] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.793804][ T345] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.794127][ T345] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 23.794463][ T345] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.794791][ T345] netif_set_mtu (net/core/dev.c:9652) 
[ 23.795111][ T345] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.795466][ T345] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 23.795790][ T345] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.796037][ T345] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 23.796429][ T345] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 23.796762][ T345] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 23.797086][ T345] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 23.797495][ T345] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 23.797838][ T345] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 23.798161][ T345] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 23.798498][ T345] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 23.798817][ T345] ? __dev_get_by_name (net/core/dev.c:865) 
[ 23.799137][ T345] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.799469][ T345] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.799804][ T345] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.800145][ T345] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.800510][ T345] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 23.800843][ T345] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.801171][ T345] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.801516][ T345] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.801836][ T345] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.802160][ T345] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.802493][ T345] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.802824][ T345] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.803149][ T345] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.803487][ T345] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.803807][ T345] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.804140][ T345] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.804514][ T345] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.804837][ 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) 
[ 23.805167][ T345] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.805504][ T345] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.805827][ T345] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.806154][ T345] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.806489][ T345] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.806811][ T345] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.807137][ T345] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.807478][ T345] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.807798][ T345] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.808268][ T345] ___sys_sendmsg (net/socket.c:2670) 
[ 23.808611][ T345] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.808931][ T345] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 23.809253][ T345] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.809581][ T345] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 23.809925][ T345] ? __handle_mm_fault (mm/memory.c:6212) 
[ 23.810245][ T345] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 23.810578][ T345] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 23.810918][ T345] __sys_sendmsg (net/socket.c:2700) 
[ 23.811238][ T345] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.811566][ 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) 
[ 23.811898][ 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) 
[ 23.812261][ T345] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.812603][ T345] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.812925][ T345] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.813322][  T345] RIP: 0033:0x7f43275241e7
[ 23.813664][ 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)
[   23.814824][  T345] RSP: 002b:00007fff73e5a068 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.815312][  T345] RAX: ffffffffffffffda RBX: 00007fff73e5a790 RCX: 00007f43275241e7
[   23.815809][  T345] RDX: 0000000000000000 RSI: 00007fff73e5a0d0 RDI: 0000000000000005
[   23.816329][  T345] RBP: 0000000000000008 R08: 00000000000000ac R09: 0000000000000000
[   23.816840][  T345] R10: 00007f432741c6f8 R11: 0000000000000246 R12: 00007fff73e5a7b0
[   23.817324][  T345] R13: 00000000686e131e R14: 0000000000499600 R15: 00007fff73e5a1b8
| [   24.682931][  T357] ------------[ cut here ]------------
| [ 24.683266][ T357] WARNING: CPU: 3 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) 
| [   24.683925][  T357] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   24.685335][  T357] Tainted: [W]=WARN
[   24.685591][  T357] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 24.686000][ 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) 
[ 24.686336][ 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
[   24.687493][  T357] RSP: 0018:ffffc900005d6ef0 EFLAGS: 00010246
[   24.687907][  T357] RAX: 0000000000000000 RBX: ffff888011c4a000 RCX: 0000000000000001
[   24.688408][  T357] RDX: 0000000000000000 RSI: ffffffffa489b941 RDI: ffffffffa40555e0
[   24.688893][  T357] RBP: ffffc900005d6fe0 R08: 0000000000000000 R09: 0000000000000000
[   24.689382][  T357] R10: ffffc900005d7010 R11: ffffffffa56a8918 R12: 1ffff920000bade2
[   24.689874][  T357] R13: 00000000000005dc R14: ffffc900005d7010 R15: ffff888011c4af08
[   24.690372][  T357] FS:  00007f7a1fe73800(0000) GS:ffff88808fa37000(0000) knlGS:0000000000000000
[   24.690934][  T357] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.691348][  T357] CR2: 00000000004e5ac0 CR3: 000000000e46b002 CR4: 0000000000772ef0
[   24.691848][  T357] PKRU: 55555554
[   24.692092][  T357] Call Trace:
[   24.692339][  T357]  <TASK>
[ 24.692516][ T357] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 24.692840][ T357] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.693167][ T357] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 24.693510][ T357] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 24.693912][ T357] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 24.694237][ T357] netif_set_mtu (net/core/dev.c:9652) 
[ 24.694574][ T357] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 24.694915][ T357] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 24.695407][ T357] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 24.695657][ T357] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 24.696103][ T357] br_add_if (net/bridge/br_if.c:697) bridge 
[ 24.696480][ T357] do_set_master (net/core/rtnetlink.c:2948) 
[ 24.696816][ T357] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 24.697153][ T357] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 24.697569][ T357] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 24.697892][ T357] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 24.698217][ T357] ? __kernel_text_address (kernel/extable.c:79) 
[ 24.698551][ T357] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.698879][ 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) 
[ 24.699203][ T357] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 24.699616][ T357] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.699953][ T357] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.700282][ T357] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 24.700617][ T357] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 24.700941][ T357] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.701266][ T357] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 24.701594][ T357] ? __create_object (mm/kmemleak.c:771) 
[ 24.701926][ T357] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 24.702261][ T357] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 24.702593][ T357] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 24.702998][ T357] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 24.703327][ T357] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 24.703664][ T357] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.703987][ T357] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.704316][ T357] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.704651][ T357] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 24.704976][ T357] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.705306][ T357] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.705636][ T357] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 24.705960][ T357] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.706284][ T357] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.706618][ T357] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 24.706946][ T357] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.707270][ T357] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 24.707613][ T357] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 24.707933][ 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) 
[ 24.708259][ T357] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 24.708592][ T357] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 24.708912][ T357] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.709241][ T357] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 24.709581][ T357] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 24.709916][ T357] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 24.710254][ T357] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 24.710592][ T357] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 24.710915][ T357] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 24.711326][ T357] ___sys_sendmsg (net/socket.c:2670) 
[ 24.711676][ T357] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 24.711997][ 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) 
[ 24.712407][ T357] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 24.712747][ T357] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.713081][ T357] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.713416][ T357] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.713740][ 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) 
[ 24.714061][ T357] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.714399][ T357] __sys_sendmsg (net/socket.c:2700) 
[ 24.714725][ T357] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 24.715129][ T357] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 24.715479][ T357] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.715807][ T357] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 24.716129][ T357] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   24.716541][  T357] RIP: 0033:0x7f7a200401e7
[ 24.716881][ 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)
[   24.718043][  T357] RSP: 002b:00007fffb2782e58 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   24.718540][  T357] RAX: ffffffffffffffda RBX: 00007fffb2783580 RCX: 00007f7a200401e7
[   24.719028][  T357] RDX: 0000000000000000 RSI: 00007fffb2782ec0 RDI: 0000000000000005
[   24.719524][  T357] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   24.720013][  T357] R10: 000000003db40910 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