======================================
| [   20.245930][  T313] ip_gre: GRE over IPv4 tunneling driver
| [   20.321397][  T312] ------------[ cut here ]------------
| [ 20.321893][ T312] WARNING: CPU: 3 PID: 312 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   20.322553][  T312] Modules linked in: ip_gre gre sch_ingress vrf veth
[   20.326776][  T312] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.328387][ T312] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 20.328750][ T312] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 1a 63 7b 00       	call   0x7b633b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   20.330148][  T312] RSP: 0018:ffffc900005e7000 EFLAGS: 00010246
[   20.330541][  T312] RAX: 0000000000000000 RBX: ffff88800bb64000 RCX: 0000000000000001
[   20.331061][  T312] RDX: 0000000000000000 RSI: ffffffff9a49b941 RDI: ffffffff99c555e0
[   20.331542][  T312] RBP: ffffc900005e70e8 R08: ffff88800bb64218 R09: 0000000000000000
[   20.332016][  T312] R10: ffffc900005e7118 R11: ffffffff9a979160 R12: 1ffff920000bce04
[   20.332510][  T312] R13: 00000000000005b6 R14: ffffc900005e7118 R15: ffff88800bb64218
[   20.333022][  T312] FS:  00007f37144e7800(0000) GS:ffff888099e37000(0000) knlGS:0000000000000000
[   20.333806][  T312] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.334195][  T312] CR2: 00007f3c52a75000 CR3: 000000000b9bb006 CR4: 0000000000772ef0
[   20.334666][  T312] PKRU: 55555554
[   20.334908][  T312] Call Trace:
[   20.335144][  T312]  <TASK>
[ 20.335300][ T312] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 20.335695][ T312] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.336014][ T312] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 20.336603][ T312] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 20.336922][ T312] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 20.337236][ T312] netif_set_mtu (net/core/dev.c:9652) 
[ 20.337551][ T312] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 20.337880][ T312] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 20.338189][ T312] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 20.338434][ T312] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 20.338755][ T312] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 20.339101][ T312] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 20.339417][ T312] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 20.339809][ T312] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 20.340125][ T312] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 20.340656][ T312] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 20.340981][ T312] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 20.341285][ T312] ? __dev_get_by_name (net/core/dev.c:865) 
[ 20.341601][ T312] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.341922][ T312] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.342236][ T312] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 20.342546][ T312] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.342868][ T312] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 20.343407][ T312] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 20.343737][ T312] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.344061][ T312] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 20.344376][ T312] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.344689][ T312] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.345221][ T312] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 20.345530][ T312] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.345940][ T312] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.346251][ T312] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 20.346560][ T312] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.346877][ T312] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 20.347199][ T312] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 20.347505][ T312] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 20.347823][ T312] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 20.348132][ T312] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 20.348452][ T312] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.348773][ T312] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 20.349089][ T312] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 20.349406][ T312] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 20.349730][ T312] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 20.350046][ T312] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 20.350352][ T312] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 20.351196][ T312] ___sys_sendmsg (net/socket.c:2670) 
[ 20.351506][ T312] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 20.351823][ T312] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 20.352134][ T312] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.352439][ T312] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 20.352759][ T312] ? __handle_mm_fault (mm/memory.c:6212) 
[ 20.353068][ T312] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 20.353373][ T312] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 20.353704][ T312] __sys_sendmsg (net/socket.c:2700) 
[ 20.354019][ T312] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 20.354321][ T312] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 20.354638][ T312] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 20.354952][ T312] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.355266][ T312] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.355803][ T312] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.356188][  T312] RIP: 0033:0x7f37146b41e7
[ 20.356529][ T312] Code: Unable to access opcode bytes at 0x7f37146b41bd.

Code starting with the faulting instruction
===========================================
[   20.357167][  T312] RSP: 002b:00007ffde9ae2c88 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.358320][  T312] RAX: ffffffffffffffda RBX: 00007ffde9ae33b0 RCX: 00007f37146b41e7
[   20.358849][  T312] RDX: 0000000000000000 RSI: 00007ffde9ae2cf0 RDI: 0000000000000005
[   20.359330][  T312] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   20.359801][  T312] R10: 00007f37145ac6f8 R11: 0000000000000246 R12: 00007ffde9ae33d0
[   20.360263][  T312] R13: 00000000686e3c61 R14: 0000000000499600 R15: 00007ffde9ae2ddc
| [   23.206506][  T340] ------------[ cut here ]------------
| [ 23.206848][ T340] WARNING: CPU: 0 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) 
| [   23.207466][  T340] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.209740][  T340] Tainted: [W]=WARN
[   23.209978][  T340] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.210361][ 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) 
[ 23.210676][ 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
[   23.211790][  T340] RSP: 0018:ffffc900005d6ef0 EFLAGS: 00010246
[   23.212181][  T340] RAX: 0000000000000000 RBX: ffff88800e98a000 RCX: 0000000000000001
[   23.212635][  T340] RDX: 0000000000000000 RSI: ffffffff9a49b941 RDI: ffffffff99c555e0
[   23.213102][  T340] RBP: ffffc900005d6fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.213568][  T340] R10: ffffc900005d7010 R11: ffffffff9b2a8918 R12: 1ffff920000bade2
[   23.214306][  T340] R13: 00000000000005dc R14: ffffc900005d7010 R15: ffff88800e98af08
[   23.214779][  T340] FS:  00007fa96578c800(0000) GS:ffff888099cb7000(0000) knlGS:0000000000000000
[   23.215318][  T340] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.215707][  T340] CR2: 00000000004e5aa8 CR3: 000000000bcfd004 CR4: 0000000000772ef0
[   23.216192][  T340] PKRU: 55555554
[   23.216431][  T340] Call Trace:
[   23.216664][  T340]  <TASK>
[ 23.216833][ T340] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.217144][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.217461][ T340] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.217778][ T340] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.218165][ T340] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.218483][ T340] netif_set_mtu (net/core/dev.c:9652) 
[ 23.218801][ T340] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.219121][ T340] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.219550][ T340] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.219809][ T340] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.220242][ T340] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.220608][ T340] do_set_master (net/core/rtnetlink.c:2948) 
[ 23.220934][ T340] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.221248][ T340] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.221636][ T340] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.221952][ T340] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.222256][ T340] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.222571][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.222888][ 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) 
[ 23.223199][ T340] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.223584][ T340] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.223938][ T340] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.224248][ T340] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.224554][ T340] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.224881][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.225192][ T340] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.225495][ T340] ? __create_object (mm/kmemleak.c:771) 
[ 23.225814][ T340] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.226122][ T340] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.226428][ T340] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.226816][ T340] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.227128][ T340] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.227451][ T340] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.227779][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.228105][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.228417][ T340] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.228731][ T340] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.229038][ T340] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.229343][ T340] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.229651][ T340] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.229975][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.230287][ T340] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.230594][ T340] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.230909][ T340] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.231227][ T340] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.231532][ 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) 
[ 23.231865][ T340] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.232176][ T340] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.232479][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.232799][ T340] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.233109][ T340] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.233416][ T340] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.233738][ T340] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.234048][ T340] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.234360][ T340] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.234760][ T340] ___sys_sendmsg (net/socket.c:2670) 
[ 23.235063][ T340] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.235366][ 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) 
[ 23.235764][ T340] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.236073][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.236383][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.236699][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.237015][ 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) 
[ 23.237321][ T340] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.237635][ T340] __sys_sendmsg (net/socket.c:2700) 
[ 23.237947][ T340] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.238326][ T340] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.238655][ T340] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.238976][ T340] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.239284][ T340] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.239663][  T340] RIP: 0033:0x7fa9659591e7
[ 23.240007][ 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)
[   23.241115][  T340] RSP: 002b:00007fff6885e7e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.241575][  T340] RAX: ffffffffffffffda RBX: 00007fff6885ef10 RCX: 00007fa9659591e7
[   23.242053][  T340] RDX: 0000000000000000 RSI: 00007fff6885e850 RDI: 0000000000000005
[   23.242511][  T340] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.242972][  T340] R10: 0000000031698910 R11: 0000000000000246 R12: 0000000000000004
[   23.243432][  T340] R13: 00000000686e3c65 R14: 0000000000499600 R15: 0000000000000000
| [   23.467217][  T342] ------------[ cut here ]------------
| [ 23.467562][ T342] WARNING: CPU: 2 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) 
| [   23.468208][  T342] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.469924][  T342] Tainted: [W]=WARN
[   23.470169][  T342] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.470564][ 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) 
[ 23.470906][ 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
[   23.472018][  T342] RSP: 0018:ffffc900004d6ef0 EFLAGS: 00010246
[   23.472416][  T342] RAX: 0000000000000000 RBX: ffff88800e98a000 RCX: 0000000000000001
[   23.472900][  T342] RDX: 0000000000000000 RSI: ffffffff9a49b941 RDI: ffffffff99c555e0
[   23.473371][  T342] RBP: ffffc900004d6fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.473859][  T342] R10: ffffc900004d7010 R11: ffffffff9b2a8918 R12: 1ffff9200009ade2
[   23.474333][  T342] R13: 00000000000005dc R14: ffffc900004d7010 R15: ffff88800e98af08
[   23.474813][  T342] FS:  00007f76323d6800(0000) GS:ffff888099db7000(0000) knlGS:0000000000000000
[   23.475359][  T342] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.475826][  T342] CR2: 00000000004e5ab0 CR3: 0000000004f9c006 CR4: 0000000000772ef0
[   23.476367][  T342] PKRU: 55555554
[   23.476612][  T342] Call Trace:
[   23.476870][  T342]  <TASK>
[ 23.477042][ T342] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.477362][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.477689][ T342] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.478032][ T342] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.478445][ T342] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.478807][ T342] netif_set_mtu (net/core/dev.c:9652) 
[ 23.479127][ T342] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.479458][ T342] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.479910][ T342] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.480159][ T342] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.480602][ T342] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.480980][ T342] do_set_master (net/core/rtnetlink.c:2948) 
[ 23.481306][ T342] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.481627][ T342] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.482043][ T342] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.482367][ T342] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.482682][ T342] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.483030][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.483355][ 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) 
[ 23.483677][ T342] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.484082][ T342] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.484410][ T342] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.484739][ T342] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.485065][ T342] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.485392][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.485727][ T342] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.486044][ T342] ? __create_object (mm/kmemleak.c:771) 
[ 23.486368][ T342] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.486684][ T342] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.487017][ T342] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.487412][ T342] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.487760][ T342] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.488086][ T342] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.488416][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.488792][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.489117][ T342] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.489436][ T342] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.489768][ T342] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.490086][ T342] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.490409][ T342] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.490746][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.491072][ T342] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.491393][ T342] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.491726][ T342] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.492060][ T342] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.492380][ 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) 
[ 23.492710][ T342] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.493045][ T342] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.493366][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.493695][ T342] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.494033][ T342] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.494353][ T342] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.494684][ T342] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.495023][ T342] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.495349][ T342] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.495768][ T342] ___sys_sendmsg (net/socket.c:2670) 
[ 23.496088][ T342] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.496409][ 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) 
[ 23.496846][ T342] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.497173][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.497503][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.497842][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.498165][ 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) 
[ 23.498527][ T342] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.498872][ T342] __sys_sendmsg (net/socket.c:2700) 
[ 23.499188][ T342] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.499583][ T342] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.499932][ T342] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.500260][ T342] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.500580][ T342] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.500986][  T342] RIP: 0033:0x7f76325a31e7
[ 23.501316][ 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)
[   23.502438][  T342] RSP: 002b:00007fff529447b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.502925][  T342] RAX: ffffffffffffffda RBX: 00007fff52944ee0 RCX: 00007f76325a31e7
[   23.503400][  T342] RDX: 0000000000000000 RSI: 00007fff52944820 RDI: 0000000000000005
[   23.503883][  T342] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.504363][  T342] R10: 00000000095c0910 R11: 0000000000000246 R12: 0000000000000004
[   23.504843][  T342] R13: 00000000686e3c65 R14: 0000000000499600 R15: 0000000000000000
| [   23.898094][  T345] ------------[ cut here ]------------
| [ 23.898454][ 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) 
| [   23.899127][  T345] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.900473][  T345] Tainted: [W]=WARN
[   23.900704][  T345] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.901103][ 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) 
[ 23.901420][ 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
[   23.902516][  T345] RSP: 0018:ffffc90000617000 EFLAGS: 00010246
[   23.902917][  T345] RAX: 0000000000000000 RBX: ffff888007c89000 RCX: 0000000000000001
[   23.903374][  T345] RDX: 0000000000000000 RSI: ffffffff9a49b941 RDI: ffffffff99c555e0
[   23.903841][  T345] RBP: ffffc900006170e8 R08: ffff888007c89218 R09: 0000000000000000
[   23.904295][  T345] R10: ffffc90000617118 R11: ffffffff9a979160 R12: 1ffff920000c2e04
[   23.904765][  T345] R13: 00000000000005b6 R14: ffffc90000617118 R15: ffff888007c89218
[   23.905244][  T345] FS:  00007f33bf763800(0000) GS:ffff888099d37000(0000) knlGS:0000000000000000
[   23.905792][  T345] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.906219][  T345] CR2: 0000000000436890 CR3: 000000000b8e7006 CR4: 0000000000772ef0
[   23.906677][  T345] PKRU: 55555554
[   23.906924][  T345] Call Trace:
[   23.907151][  T345]  <TASK>
[ 23.907305][ T345] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 23.907688][ T345] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.908007][ T345] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.908316][ T345] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 23.908641][ T345] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.908962][ T345] netif_set_mtu (net/core/dev.c:9652) 
[ 23.909279][ T345] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.909597][ T345] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 23.909918][ T345] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.910184][ T345] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 23.910497][ T345] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 23.910824][ T345] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 23.911134][ T345] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 23.911519][ T345] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 23.911845][ T345] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 23.912150][ T345] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 23.912456][ T345] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 23.912769][ T345] ? __dev_get_by_name (net/core/dev.c:865) 
[ 23.913074][ T345] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.913382][ T345] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.913692][ T345] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.914050][ T345] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.914370][ T345] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 23.914687][ T345] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.915015][ T345] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.915335][ T345] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.915635][ T345] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.915956][ T345] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.916265][ T345] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.916570][ T345] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.916893][ T345] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.917205][ T345] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.917511][ T345] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.917832][ T345] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.918149][ T345] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.918468][ 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) 
[ 23.918788][ T345] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.919099][ T345] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.919403][ T345] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.919735][ T345] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.920044][ T345] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.920351][ T345] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.920665][ T345] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.921017][ T345] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.921323][ T345] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.921729][ T345] ___sys_sendmsg (net/socket.c:2670) 
[ 23.922041][ T345] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.922345][ T345] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 23.922654][ T345] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.922978][ T345] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 23.923290][ T345] ? __handle_mm_fault (mm/memory.c:6212) 
[ 23.923596][ T345] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 23.923911][ T345] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 23.924235][ T345] __sys_sendmsg (net/socket.c:2700) 
[ 23.924544][ T345] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.924860][ 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) 
[ 23.925182][ 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) 
[ 23.925492][ T345] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.925816][ T345] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.926123][ T345] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.926502][  T345] RIP: 0033:0x7f33bf9301e7
[ 23.926833][ 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)
[   23.927940][  T345] RSP: 002b:00007ffca1aef218 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.928417][  T345] RAX: ffffffffffffffda RBX: 00007ffca1aef940 RCX: 00007f33bf9301e7
[   23.928887][  T345] RDX: 0000000000000000 RSI: 00007ffca1aef280 RDI: 0000000000000005
[   23.929350][  T345] RBP: 0000000000000008 R08: 00000000000000ac R09: 0000000000000000
[   23.929821][  T345] R10: 00007f33bf8286f8 R11: 0000000000000246 R12: 00007ffca1aef960
[   23.930281][  T345] R13: 00000000686e3c65 R14: 0000000000499600 R15: 00007ffca1aef368
| [   24.922632][  T357] ------------[ cut here ]------------
| [ 24.923236][ 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) 
| [   24.924362][  T357] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   24.926922][  T357] Tainted: [W]=WARN
[   24.927355][  T357] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 24.928075][ 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) 
[ 24.928686][ 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
[   24.930779][  T357] RSP: 0018:ffffc900006c6ef0 EFLAGS: 00010246
[   24.931514][  T357] RAX: 0000000000000000 RBX: ffff88801146a000 RCX: 0000000000000001
[   24.932390][  T357] RDX: 0000000000000000 RSI: ffffffff9a49b941 RDI: ffffffff99c555e0
[   24.933276][  T357] RBP: ffffc900006c6fe0 R08: 0000000000000000 R09: 0000000000000000
[   24.934157][  T357] R10: ffffc900006c7010 R11: ffffffff9b2a8918 R12: 1ffff920000d8de2
[   24.935025][  T357] R13: 00000000000005dc R14: ffffc900006c7010 R15: ffff88801146af08
[   24.935891][  T357] FS:  00007f0277416800(0000) GS:ffff888099e37000(0000) knlGS:0000000000000000
[   24.936920][  T357] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.937647][  T357] CR2: 00000000004e5ac0 CR3: 0000000009ac9002 CR4: 0000000000772ef0
[   24.938531][  T357] PKRU: 55555554
[   24.938985][  T357] Call Trace:
[   24.939446][  T357]  <TASK>
[ 24.939745][ T357] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 24.940387][ T357] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.940968][ T357] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 24.941536][ T357] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 24.942226][ T357] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 24.942798][ T357] netif_set_mtu (net/core/dev.c:9652) 
[ 24.943355][ T357] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 24.943911][ T357] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 24.944665][ T357] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 24.945119][ T357] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 24.945892][ T357] br_add_if (net/bridge/br_if.c:697) bridge 
[ 24.946531][ T357] do_set_master (net/core/rtnetlink.c:2948) 
[ 24.947104][ T357] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 24.947670][ T357] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 24.948408][ T357] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 24.948827][ T357] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 24.949138][ T357] ? __kernel_text_address (kernel/extable.c:79) 
[ 24.949464][ T357] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.949793][ 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) 
[ 24.950108][ T357] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 24.950510][ T357] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.950831][ T357] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.951136][ T357] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 24.951458][ T357] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 24.951781][ T357] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.952089][ T357] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 24.952410][ T357] ? __create_object (mm/kmemleak.c:771) 
[ 24.952738][ T357] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 24.953072][ T357] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 24.953396][ T357] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 24.953793][ T357] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 24.954109][ T357] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 24.954434][ T357] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.954750][ T357] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.955067][ T357] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.955375][ T357] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 24.955693][ T357] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.956009][ T357] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.956313][ T357] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 24.956635][ T357] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.956959][ T357] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.957271][ T357] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 24.957598][ T357] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.957915][ T357] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 24.958242][ T357] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 24.958576][ 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) 
[ 24.958900][ T357] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 24.959210][ T357] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 24.959530][ T357] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.959857][ T357] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 24.960167][ T357] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 24.960486][ T357] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 24.961055][ T357] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 24.961373][ T357] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 24.961695][ T357] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 24.962102][ T357] ___sys_sendmsg (net/socket.c:2670) 
[ 24.962724][ T357] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 24.963041][ 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) 
[ 24.963426][ T357] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 24.963760][ T357] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.964293][ T357] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.964618][ T357] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.964941][ 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) 
[ 24.965255][ T357] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.965821][ T357] __sys_sendmsg (net/socket.c:2700) 
[ 24.966129][ T357] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 24.966507][ T357] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 24.966851][ T357] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.967389][ T357] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 24.967708][ T357] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   24.968101][  T357] RIP: 0033:0x7f02775e31e7
[ 24.968469][ 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)
[   24.969882][  T357] RSP: 002b:00007ffddcf204c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   24.970572][  T357] RAX: ffffffffffffffda RBX: 00007ffddcf20bf0 RCX: 00007f02775e31e7
[   24.971075][  T357] RDX: 0000000000000000 RSI: 00007ffddcf20530 RDI: 0000000000000005
[   24.971554][  T357] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   24.972275][  T357] R10: 000000004032d910 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