======================================
| [   19.766081][  T313] ip_gre: GRE over IPv4 tunneling driver
| [   19.838261][  T312] ------------[ cut here ]------------
| [ 19.838751][ T312] WARNING: CPU: 2 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) 
| [   19.839443][  T312] Modules linked in: ip_gre gre sch_ingress vrf veth
[   19.840544][  T312] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.841012][ 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) 
[ 19.841367][ 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
[   19.842541][  T312] RSP: 0018:ffffc900005e7000 EFLAGS: 00010246
[   19.842977][  T312] RAX: 0000000000000000 RBX: ffff888009b64000 RCX: 0000000000000001
[   19.843473][  T312] RDX: 0000000000000000 RSI: ffffffffb209b941 RDI: ffffffffb18555e0
[   19.844009][  T312] RBP: ffffc900005e70e8 R08: ffff888009b64218 R09: 0000000000000000
[   19.844507][  T312] R10: ffffc900005e7118 R11: ffffffffb2579160 R12: 1ffff920000bce04
[   19.845262][  T312] R13: 00000000000005b6 R14: ffffc900005e7118 R15: ffff888009b64218
[   19.845764][  T312] FS:  00007f0e67c58800(0000) GS:ffff8880821b7000(0000) knlGS:0000000000000000
[   19.846351][  T312] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.846768][  T312] CR2: 00007f2f348a6e10 CR3: 000000000b8c4004 CR4: 0000000000772ef0
[   19.847386][  T312] PKRU: 55555554
[   19.847803][  T312] Call Trace:
[   19.848072][  T312]  <TASK>
[ 19.848253][ T312] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 19.848675][ T312] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.849039][ T312] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.849383][ T312] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 19.849724][ T312] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.850077][ T312] netif_set_mtu (net/core/dev.c:9652) 
[ 19.850424][ T312] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.850774][ T312] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 19.851122][ T312] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.851381][ T312] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 19.851717][ T312] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 19.852077][ T312] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 19.852424][ T312] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 19.852856][ T312] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 19.853201][ T312] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 19.853543][ T312] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 19.853895][ T312] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 19.854232][ T312] ? __dev_get_by_name (net/core/dev.c:865) 
[ 19.854567][ T312] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 19.854917][ T312] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 19.855259][ T312] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.855604][ T312] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 19.855962][ T312] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 19.856307][ T312] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.856937][ T312] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.857289][ T312] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.857861][ T312] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.858201][ T312] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.858770][ T312] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.859121][ T312] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.859457][ T312] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.859813][ T312] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.860153][ T312] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.860492][ T312] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.860846][ T312] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.861190][ 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) 
[ 19.861975][ T312] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 19.862321][ T312] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.862654][ T312] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.863051][ T312] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.863394][ T312] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.863727][ T312] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.864306][ T312] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.864659][ T312] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.865222][ T312] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.865648][ T312] ___sys_sendmsg (net/socket.c:2670) 
[ 19.865992][ T312] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.866327][ T312] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 19.866663][ T312] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 19.867238][ T312] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 19.867580][ T312] ? __handle_mm_fault (mm/memory.c:6212) 
[ 19.867930][ T312] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 19.868404][ T312] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 19.869000][ T312] __sys_sendmsg (net/socket.c:2700) 
[ 19.869325][ T312] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.869644][ 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) 
[ 19.870009][ 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) 
[ 19.870334][ T312] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.870655][ T312] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.870985][ T312] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.871378][  T312] RIP: 0033:0x7f0e67e251e7
[ 19.871716][ T312] Code: Unable to access opcode bytes at 0x7f0e67e251bd.

Code starting with the faulting instruction
===========================================
[   19.872139][  T312] RSP: 002b:00007fff0d039888 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.872627][  T312] RAX: ffffffffffffffda RBX: 00007fff0d039fb0 RCX: 00007f0e67e251e7
[   19.873113][  T312] RDX: 0000000000000000 RSI: 00007fff0d0398f0 RDI: 0000000000000005
[   19.873589][  T312] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   19.874074][  T312] R10: 00007f0e67d1d6f8 R11: 0000000000000246 R12: 00007fff0d039fd0
[   19.874557][  T312] R13: 00000000686e1ee7 R14: 0000000000499600 R15: 00007fff0d0399dc
| [   22.676462][  T341] ------------[ cut here ]------------
| [ 22.676834][ T341] WARNING: CPU: 2 PID: 341 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   22.677460][  T341] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   22.679656][  T341] Tainted: [W]=WARN
[   22.680177][  T341] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 22.680746][ T341] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 22.681210][ T341] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 1a 63 7b 00       	call   0x7b633b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   22.682327][  T341] RSP: 0018:ffffc90000556ef0 EFLAGS: 00010246
[   22.682729][  T341] RAX: 0000000000000000 RBX: ffff8880099e2000 RCX: 0000000000000001
[   22.683217][  T341] RDX: 0000000000000000 RSI: ffffffffb209b941 RDI: ffffffffb18555e0
[   22.683687][  T341] RBP: ffffc90000556fe0 R08: 0000000000000000 R09: 0000000000000000
[   22.684172][  T341] R10: ffffc90000557010 R11: ffffffffb2ea8918 R12: 1ffff920000aade2
[   22.684648][  T341] R13: 00000000000005dc R14: ffffc90000557010 R15: ffff8880099e2f08
[   22.685136][  T341] FS:  00007fbce9611800(0000) GS:ffff8880821b7000(0000) knlGS:0000000000000000
[   22.685686][  T341] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.686094][  T341] CR2: 00000000004e5aa8 CR3: 0000000009138005 CR4: 0000000000772ef0
[   22.686572][  T341] PKRU: 55555554
[   22.686826][  T341] Call Trace:
[   22.687072][  T341]  <TASK>
[ 22.687244][ T341] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 22.687569][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.687911][ T341] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 22.688233][ T341] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 22.688629][ T341] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 22.688986][ T341] netif_set_mtu (net/core/dev.c:9652) 
[ 22.689308][ T341] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 22.689640][ T341] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 22.690098][ T341] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 22.690346][ T341] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 22.690792][ T341] br_add_if (net/bridge/br_if.c:697) bridge 
[ 22.691165][ T341] do_set_master (net/core/rtnetlink.c:2948) 
[ 22.691495][ T341] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 22.691835][ T341] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 22.692238][ T341] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 22.692560][ T341] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 22.692891][ T341] ? __kernel_text_address (kernel/extable.c:79) 
[ 22.693220][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.693549][ T341] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113) 
[ 22.693894][ T341] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 22.694288][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.694613][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.694946][ T341] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 22.695269][ T341] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 22.695590][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.695928][ T341] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 22.696249][ T341] ? __create_object (mm/kmemleak.c:771) 
[ 22.696574][ T341] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 22.696908][ T341] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 22.697227][ T341] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 22.697618][ T341] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 22.697958][ T341] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 22.698289][ T341] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.698613][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.698971][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.699294][ T341] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 22.699607][ T341] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.699942][ T341] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.700263][ T341] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 22.700587][ T341] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.700931][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.701260][ T341] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 22.701586][ T341] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.701922][ T341] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 22.702251][ T341] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 22.702570][ T341] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 22.702904][ T341] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 22.703228][ T341] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 22.703553][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.703891][ T341] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 22.704220][ T341] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 22.704540][ T341] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 22.704891][ T341] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 22.705215][ T341] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 22.705533][ T341] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 22.705957][ T341] ___sys_sendmsg (net/socket.c:2670) 
[ 22.706293][ T341] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 22.706645][ T341] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3096) 
[ 22.707063][ T341] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 22.707388][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.707717][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.708060][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.708383][ T341] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 22.708707][ T341] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.709061][ T341] __sys_sendmsg (net/socket.c:2700) 
[ 22.709377][ T341] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 22.709770][ T341] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 22.710114][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.710435][ T341] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 22.710756][ T341] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   22.711169][  T341] RIP: 0033:0x7fbce97de1e7
[ 22.711502][ T341] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   22.712631][  T341] RSP: 002b:00007ffe760c5708 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   22.713224][  T341] RAX: ffffffffffffffda RBX: 00007ffe760c5e30 RCX: 00007fbce97de1e7
[   22.713771][  T341] RDX: 0000000000000000 RSI: 00007ffe760c5770 RDI: 0000000000000005
[   22.714256][  T341] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   22.714727][  T341] R10: 000000003f02b910 R11: 0000000000000246 R12: 0000000000000004
[   22.715214][  T341] R13: 00000000686e1eea R14: 0000000000499600 R15: 0000000000000000
| [   22.949694][  T344] ------------[ cut here ]------------
| [ 22.950039][ T344] WARNING: CPU: 3 PID: 344 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   22.950653][  T344] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   22.952526][  T344] Tainted: [W]=WARN
[   22.952757][  T344] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 22.953239][ T344] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 22.953610][ T344] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 1a 63 7b 00       	call   0x7b633b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   22.954883][  T344] RSP: 0018:ffffc90000576ef0 EFLAGS: 00010246
[   22.955336][  T344] RAX: 0000000000000000 RBX: ffff8880099e2000 RCX: 0000000000000001
[   22.955868][  T344] RDX: 0000000000000000 RSI: ffffffffb209b941 RDI: ffffffffb18555e0
[   22.956387][  T344] RBP: ffffc90000576fe0 R08: 0000000000000000 R09: 0000000000000000
[   22.956924][  T344] R10: ffffc90000577010 R11: ffffffffb2ea8918 R12: 1ffff920000aede2
[   22.957451][  T344] R13: 00000000000005dc R14: ffffc90000577010 R15: ffff8880099e2f08
[   22.957981][  T344] FS:  00007fe165cbc800(0000) GS:ffff888082237000(0000) knlGS:0000000000000000
[   22.958588][  T344] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.959070][  T344] CR2: 00000000004e5ab0 CR3: 000000000e245001 CR4: 0000000000772ef0
[   22.959600][  T344] PKRU: 55555554
[   22.959875][  T344] Call Trace:
[   22.960140][  T344]  <TASK>
[ 22.960322][ T344] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 22.960675][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.961045][ T344] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 22.961402][ T344] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 22.961856][ T344] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 22.962210][ T344] netif_set_mtu (net/core/dev.c:9652) 
[ 22.962561][ T344] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 22.962939][ T344] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 22.963432][ T344] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 22.963696][ T344] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 22.964175][ T344] br_add_if (net/bridge/br_if.c:697) bridge 
[ 22.964578][ T344] do_set_master (net/core/rtnetlink.c:2948) 
[ 22.964947][ T344] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 22.965309][ T344] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 22.965748][ T344] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 22.966130][ T344] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 22.966477][ T344] ? __kernel_text_address (kernel/extable.c:79) 
[ 22.966855][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.967209][ T344] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113) 
[ 22.967560][ T344] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 22.968003][ T344] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.968354][ T344] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.968699][ T344] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 22.969063][ T344] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 22.969413][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.969762][ T344] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 22.970120][ T344] ? __create_object (mm/kmemleak.c:771) 
[ 22.970473][ T344] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 22.970841][ T344] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 22.971195][ T344] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 22.971628][ T344] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 22.971994][ T344] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 22.972354][ T344] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.972700][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.973068][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.973420][ T344] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 22.973763][ T344] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.974125][ T344] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.974473][ T344] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 22.974840][ T344] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.975199][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.975546][ T344] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 22.975903][ T344] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.976250][ T344] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 22.976608][ T344] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 22.976966][ T344] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 22.977321][ T344] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 22.977674][ T344] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 22.978031][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.978386][ T344] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 22.978739][ T344] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 22.979119][ T344] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 22.979479][ T344] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 22.979843][ T344] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 22.980198][ T344] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 22.980643][ T344] ___sys_sendmsg (net/socket.c:2670) 
[ 22.981000][ T344] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 22.981351][ T344] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3096) 
[ 22.981801][ T344] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 22.982155][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.982505][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.982889][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.983251][ T344] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 22.983602][ T344] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.983969][ T344] __sys_sendmsg (net/socket.c:2700) 
[ 22.984323][ T344] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 22.984757][ T344] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 22.985130][ T344] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.985483][ T344] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 22.985852][ T344] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   22.986285][  T344] RIP: 0033:0x7fe165e891e7
[ 22.986646][ T344] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   22.987931][  T344] RSP: 002b:00007ffdb34a6118 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   22.988473][  T344] RAX: ffffffffffffffda RBX: 00007ffdb34a6840 RCX: 00007fe165e891e7
[   22.989026][  T344] RDX: 0000000000000000 RSI: 00007ffdb34a6180 RDI: 0000000000000005
[   22.989547][  T344] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   22.990077][  T344] R10: 0000000020103910 R11: 0000000000000246 R12: 0000000000000004
[   22.990604][  T344] R13: 00000000686e1eea R14: 0000000000499600 R15: 0000000000000000
| [   23.393113][  T347] ------------[ cut here ]------------
| [ 23.393488][ T347] WARNING: CPU: 1 PID: 347 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) 
| [   23.394125][  T347] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.395534][  T347] Tainted: [W]=WARN
[   23.395771][  T347] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.396223][ T347] 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) 
[ 23.396583][ T347] 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
[   23.397682][  T347] RSP: 0018:ffffc90000607000 EFLAGS: 00010246
[   23.398086][  T347] RAX: 0000000000000000 RBX: ffff8880079d4000 RCX: 0000000000000001
[   23.398541][  T347] RDX: 0000000000000000 RSI: ffffffffb209b941 RDI: ffffffffb18555e0
[   23.399011][  T347] RBP: ffffc900006070e8 R08: ffff8880079d4218 R09: 0000000000000000
[   23.399471][  T347] R10: ffffc90000607118 R11: ffffffffb2579160 R12: 1ffff920000c0e04
[   23.399943][  T347] R13: 00000000000005b6 R14: ffffc90000607118 R15: ffff8880079d4218
[   23.400399][  T347] FS:  00007fbe33372800(0000) GS:ffff888082137000(0000) knlGS:0000000000000000
[   23.400934][  T347] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.401318][  T347] CR2: 0000000000436890 CR3: 000000000e245004 CR4: 0000000000772ef0
[   23.401769][  T347] PKRU: 55555554
[   23.402013][  T347] Call Trace:
[   23.402243][  T347]  <TASK>
[ 23.402397][ T347] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 23.402778][ T347] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.403101][ T347] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.403438][ T347] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 23.403744][ T347] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.404064][ T347] netif_set_mtu (net/core/dev.c:9652) 
[ 23.404376][ T347] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.404692][ T347] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 23.405005][ T347] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.405239][ T347] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 23.405557][ T347] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 23.405875][ T347] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 23.406184][ T347] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 23.406570][ T347] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 23.406890][ T347] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 23.407195][ T347] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 23.407512][ T347] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 23.407819][ T347] ? __dev_get_by_name (net/core/dev.c:865) 
[ 23.408122][ T347] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.408427][ T347] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.408734][ T347] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.409056][ T347] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.409375][ T347] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 23.409690][ T347] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.410033][ T347] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.410349][ T347] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.410649][ T347] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.410963][ T347] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.411272][ T347] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.411578][ T347] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.411894][ T347] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.412201][ T347] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.412505][ T347] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.412818][ T347] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.413132][ T347] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.413442][ T347] ? 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) 
[ 23.413745][ T347] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.414062][ T347] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.414363][ T347] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.414671][ T347] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.414985][ T347] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.415288][ T347] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.415606][ T347] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.415928][ T347] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.416229][ T347] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.416621][ T347] ___sys_sendmsg (net/socket.c:2670) 
[ 23.416933][ T347] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.417234][ T347] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 23.417561][ T347] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.417876][ T347] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 23.418183][ T347] ? __handle_mm_fault (mm/memory.c:6212) 
[ 23.418487][ T347] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 23.418804][ T347] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 23.419124][ T347] __sys_sendmsg (net/socket.c:2700) 
[ 23.419424][ T347] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.419739][ T347] ? 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) 
[ 23.420110][ T347] ? 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) 
[ 23.420421][ T347] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.420729][ T347] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.421044][ T347] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.421420][  T347] RIP: 0033:0x7fbe3353f1e7
[ 23.421751][ T347] 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)
[   23.422843][  T347] RSP: 002b:00007fffd27c5bd8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.423300][  T347] RAX: ffffffffffffffda RBX: 00007fffd27c6300 RCX: 00007fbe3353f1e7
[   23.423769][  T347] RDX: 0000000000000000 RSI: 00007fffd27c5c40 RDI: 0000000000000005
[   23.424242][  T347] RBP: 0000000000000008 R08: 00000000000000ac R09: 0000000000000000
[   23.424693][  T347] R10: 00007fbe334376f8 R11: 0000000000000246 R12: 00007fffd27c6320
[   23.425155][  T347] R13: 00000000686e1eeb R14: 0000000000499600 R15: 00007fffd27c5d28
| [   24.347359][  T359] ------------[ cut here ]------------
| [ 24.347744][ T359] WARNING: CPU: 3 PID: 359 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) 
| [   24.348467][  T359] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   24.350052][  T359] Tainted: [W]=WARN
[   24.350332][  T359] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 24.350767][ T359] 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) 
[ 24.351139][ T359] 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
[   24.352388][  T359] RSP: 0018:ffffc90000646ef0 EFLAGS: 00010246
[   24.352840][  T359] RAX: 0000000000000000 RBX: ffff88800e18a000 RCX: 0000000000000001
[   24.353364][  T359] RDX: 0000000000000000 RSI: ffffffffb209b941 RDI: ffffffffb18555e0
[   24.353894][  T359] RBP: ffffc90000646fe0 R08: 0000000000000000 R09: 0000000000000000
[   24.354425][  T359] R10: ffffc90000647010 R11: ffffffffb2ea8918 R12: 1ffff920000c8de2
[   24.354952][  T359] R13: 00000000000005dc R14: ffffc90000647010 R15: ffff88800e18af08
[   24.355480][  T359] FS:  00007f9c1a9a5800(0000) GS:ffff888082237000(0000) knlGS:0000000000000000
[   24.356106][  T359] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.356553][  T359] CR2: 00000000004e5ac0 CR3: 0000000005d74002 CR4: 0000000000772ef0
[   24.357086][  T359] PKRU: 55555554
[   24.357354][  T359] Call Trace:
[   24.357618][  T359]  <TASK>
[ 24.357811][ T359] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 24.358169][ T359] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.358529][ T359] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 24.358919][ T359] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 24.359360][ T359] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 24.359710][ T359] netif_set_mtu (net/core/dev.c:9652) 
[ 24.360089][ T359] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 24.360466][ T359] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 24.360961][ T359] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 24.361232][ T359] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 24.361714][ T359] br_add_if (net/bridge/br_if.c:697) bridge 
[ 24.362120][ T359] do_set_master (net/core/rtnetlink.c:2948) 
[ 24.362480][ T359] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 24.362843][ T359] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 24.363284][ T359] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 24.363634][ T359] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 24.363990][ T359] ? __kernel_text_address (kernel/extable.c:79) 
[ 24.364354][ T359] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.364706][ T359] ? __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) 
[ 24.365072][ T359] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 24.365513][ T359] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.365882][ T359] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.366231][ T359] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 24.366580][ T359] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 24.366952][ T359] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.367303][ T359] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 24.367644][ T359] ? __create_object (mm/kmemleak.c:771) 
[ 24.368008][ T359] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 24.368360][ T359] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 24.368708][ T359] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 24.369166][ T359] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 24.369539][ T359] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 24.369915][ T359] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.370269][ T359] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.370621][ T359] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.370985][ T359] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 24.371336][ T359] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.371687][ T359] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.372049][ T359] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 24.372412][ T359] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.372764][ T359] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.373132][ T359] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 24.373484][ T359] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.373850][ T359] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 24.374211][ T359] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 24.374555][ T359] ? 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) 
[ 24.374921][ T359] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 24.375278][ T359] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 24.375625][ T359] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.375994][ T359] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 24.376349][ T359] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 24.376697][ T359] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 24.377074][ T359] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 24.377431][ T359] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 24.377795][ T359] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 24.378244][ T359] ___sys_sendmsg (net/socket.c:2670) 
[ 24.378589][ T359] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 24.378964][ T359] ? __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) 
[ 24.379401][ T359] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 24.379752][ T359] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.380126][ T359] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.380485][ T359] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.380845][ T359] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 24.381196][ T359] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.381854][ T359] __sys_sendmsg (net/socket.c:2700) 
[ 24.382207][ T359] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 24.382647][ T359] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 24.383250][ T359] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.383613][ T359] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 24.383975][ T359] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   24.384410][  T359] RIP: 0033:0x7f9c1ab721e7
[ 24.385014][ T359] 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)
[   24.386257][  T359] RSP: 002b:00007ffd8e805578 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   24.387022][  T359] RAX: ffffffffffffffda RBX: 00007ffd8e805ca0 RCX: 00007f9c1ab721e7
[   24.387547][  T359] RDX: 0000000000000000 RSI: 00007ffd8e8055e0 RDI: 0000000000000005
[   24.388295][  T359] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   24.388843][  T359] R10: 000000000e867910 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