======================================
| [   20.367090][  T314] ip_gre: GRE over IPv4 tunneling driver
| [   20.421083][  T313] ------------[ cut here ]------------
| [ 20.421527][ T313] WARNING: CPU: 0 PID: 313 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   20.422142][  T313] Modules linked in: ip_gre gre sch_ingress vrf veth
[   20.423193][  T313] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.423732][ T313] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 20.424062][ T313] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 1a 63 7b 00       	call   0x7b633b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   20.425370][  T313] RSP: 0018:ffffc900006e7000 EFLAGS: 00010246
[   20.425765][  T313] RAX: 0000000000000000 RBX: ffff88800922c000 RCX: 0000000000000001
[   20.426232][  T313] RDX: 0000000000000000 RSI: ffffffffa709b941 RDI: ffffffffa68555e0
[   20.426709][  T313] RBP: ffffc900006e70e8 R08: ffff88800922c218 R09: 0000000000000000
[   20.427175][  T313] R10: ffffc900006e7118 R11: ffffffffa7579160 R12: 1ffff920000dce04
[   20.427645][  T313] R13: 00000000000005b6 R14: ffffc900006e7118 R15: ffff88800922c218
[   20.428107][  T313] FS:  00007faafcff8800(0000) GS:ffff8880862b7000(0000) knlGS:0000000000000000
[   20.428810][  T313] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.429198][  T313] CR2: 00007fb33dca3780 CR3: 000000000c816001 CR4: 0000000000772ef0
[   20.429680][  T313] PKRU: 55555554
[   20.429920][  T313] Call Trace:
[   20.430153][  T313]  <TASK>
[ 20.430320][ T313] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 20.430710][ T313] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.431017][ T313] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 20.431338][ T313] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 20.431646][ T313] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 20.431964][ T313] netif_set_mtu (net/core/dev.c:9652) 
[ 20.432509][ T313] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 20.432830][ T313] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 20.433137][ T313] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 20.439671][ T313] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 20.440081][ T313] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 20.441049][ T313] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 20.441381][ T313] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 20.441763][ T313] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 20.442077][ T313] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 20.442398][ T313] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 20.442710][ T313] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 20.443013][ T313] ? __dev_get_by_name (net/core/dev.c:865) 
[ 20.443327][ T313] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.443640][ T313] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.443953][ T313] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 20.444264][ T313] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.444576][ T313] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 20.444893][ T313] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 20.445208][ T313] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.445532][ T313] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 20.446311][ T313] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.446624][ T313] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.447151][ T313] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 20.447468][ T313] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.447778][ T313] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.448091][ T313] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 20.448409][ T313] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.448719][ T313] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 20.449043][ T313] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 20.449358][ T313] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 20.449666][ T313] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 20.449975][ T313] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 20.450291][ T313] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.450603][ T313] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 20.450910][ T313] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 20.451229][ T313] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 20.451541][ T313] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 20.451850][ T313] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 20.452153][ T313] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 20.452552][ T313] ___sys_sendmsg (net/socket.c:2670) 
[ 20.452861][ T313] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 20.453168][ T313] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 20.453709][ T313] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.454014][ T313] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 20.454332][ T313] ? __handle_mm_fault (mm/memory.c:6212) 
[ 20.454638][ T313] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 20.458447][ T313] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 20.458784][ T313] __sys_sendmsg (net/socket.c:2700) 
[ 20.459091][ T313] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 20.460057][ T313] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 20.460383][ T313] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 20.460692][ T313] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.461000][ T313] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.461316][ T313] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.461700][  T313] RIP: 0033:0x7faafd1c51e7
[ 20.462022][ T313] Code: Unable to access opcode bytes at 0x7faafd1c51bd.

Code starting with the faulting instruction
===========================================
[   20.462424][  T313] RSP: 002b:00007fff569f1c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.462899][  T313] RAX: ffffffffffffffda RBX: 00007fff569f23a0 RCX: 00007faafd1c51e7
[   20.463369][  T313] RDX: 0000000000000000 RSI: 00007fff569f1ce0 RDI: 0000000000000005
[   20.463833][  T313] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   20.464308][  T313] R10: 00007faafd0bd6f8 R11: 0000000000000246 R12: 00007fff569f23c0
[   20.464768][  T313] R13: 00000000686e1c66 R14: 0000000000499600 R15: 00007fff569f1dcc
| [   23.452133][  T341] ------------[ cut here ]------------
| [ 23.452465][ T341] WARNING: CPU: 3 PID: 341 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   23.453078][  T341] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.454491][  T341] Tainted: [W]=WARN
[   23.454750][  T341] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.455141][ T341] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 23.455462][ T341] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 1a 63 7b 00       	call   0x7b633b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   23.458134][  T341] RSP: 0018:ffffc90000606ef0 EFLAGS: 00010246
[   23.458585][  T341] RAX: 0000000000000000 RBX: ffff88800adea000 RCX: 0000000000000001
[   23.459067][  T341] RDX: 0000000000000000 RSI: ffffffffa709b941 RDI: ffffffffa68555e0
[   23.459529][  T341] RBP: ffffc90000606fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.459988][  T341] R10: ffffc90000607010 R11: ffffffffa7ea8918 R12: 1ffff920000c0de2
[   23.460449][  T341] R13: 00000000000005dc R14: ffffc90000607010 R15: ffff88800adeaf08
[   23.460904][  T341] FS:  00007fa2da6cf800(0000) GS:ffff888086437000(0000) knlGS:0000000000000000
[   23.461440][  T341] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.461826][  T341] CR2: 00000000004e5aa8 CR3: 000000000b32d002 CR4: 0000000000772ef0
[   23.462286][  T341] PKRU: 55555554
[   23.462516][  T341] Call Trace:
[   23.462744][  T341]  <TASK>
[ 23.462901][ T341] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.463204][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.463527][ T341] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.463842][ T341] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.464233][ T341] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.464542][ T341] netif_set_mtu (net/core/dev.c:9652) 
[ 23.464849][ T341] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.465171][ T341] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.465803][ T341] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.466044][ T341] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.466486][ T341] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.466836][ T341] do_set_master (net/core/rtnetlink.c:2948) 
[ 23.467144][ T341] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.467462][ T341] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.467844][ T341] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.468148][ T341] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.468486][ T341] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.468803][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.469110][ T341] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113) 
[ 23.469425][ T341] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.469804][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.470112][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.470424][ T341] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.470728][ T341] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.471037][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.471348][ T341] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.471653][ T341] ? __create_object (mm/kmemleak.c:771) 
[ 23.471960][ T341] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.472278][ T341] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.472584][ T341] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.472957][ T341] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.473285][ T341] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.473609][ T341] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.473926][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.474246][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.474584][ T341] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.474951][ T341] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.475268][ T341] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.475577][ T341] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.475910][ T341] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.476248][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.476557][ T341] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.476862][ T341] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.477180][ T341] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.477511][ T341] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.477826][ T341] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 23.478147][ T341] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.478481][ T341] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.478800][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.479113][ T341] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.479443][ T341] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.479756][ T341] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.480078][ T341] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.480395][ T341] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.480716][ T341] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.481109][ T341] ___sys_sendmsg (net/socket.c:2670) 
[ 23.481432][ T341] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.481740][ T341] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3096) 
[ 23.482126][ T341] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.482450][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.482773][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.483116][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.483430][ T341] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 23.483736][ T341] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.484054][ T341] __sys_sendmsg (net/socket.c:2700) 
[ 23.484366][ T341] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.484742][ T341] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.485058][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.485381][ T341] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.485716][ T341] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.486116][  T341] RIP: 0033:0x7fa2da89c1e7
[ 23.486449][ T341] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   23.487552][  T341] RSP: 002b:00007ffd28360c08 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.488017][  T341] RAX: ffffffffffffffda RBX: 00007ffd28361330 RCX: 00007fa2da89c1e7
[   23.488579][  T341] RDX: 0000000000000000 RSI: 00007ffd28360c70 RDI: 0000000000000005
[   23.489039][  T341] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.489537][  T341] R10: 000000003b22c910 R11: 0000000000000246 R12: 0000000000000004
[   23.490011][  T341] R13: 00000000686e1c6a R14: 0000000000499600 R15: 0000000000000000
| [   23.732834][  T343] ------------[ cut here ]------------
| [ 23.733164][ T343] WARNING: CPU: 0 PID: 343 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) 
| [   23.733892][  T343] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.735688][  T343] Tainted: [W]=WARN
[   23.735923][  T343] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.736467][ T343] 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) 
[ 23.736800][ T343] 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
[   23.738149][  T343] RSP: 0018:ffffc900005d6ef0 EFLAGS: 00010246
[   23.738755][  T343] RAX: 0000000000000000 RBX: ffff88800adea000 RCX: 0000000000000001
[   23.739212][  T343] RDX: 0000000000000000 RSI: ffffffffa709b941 RDI: ffffffffa68555e0
[   23.739784][  T343] RBP: ffffc900005d6fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.740253][  T343] R10: ffffc900005d7010 R11: ffffffffa7ea8918 R12: 1ffff920000bade2
[   23.740730][  T343] R13: 00000000000005dc R14: ffffc900005d7010 R15: ffff88800adeaf08
[   23.741197][  T343] FS:  00007f62d5888800(0000) GS:ffff8880862b7000(0000) knlGS:0000000000000000
[   23.741764][  T343] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.742165][  T343] CR2: 00000000004e5ab0 CR3: 00000000029fe004 CR4: 0000000000772ef0
[   23.742640][  T343] PKRU: 55555554
[   23.742884][  T343] Call Trace:
[   23.743137][  T343]  <TASK>
[ 23.743307][ T343] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.743646][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.743981][ T343] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.744317][ T343] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.744704][ T343] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.745046][ T343] netif_set_mtu (net/core/dev.c:9652) 
[ 23.745362][ T343] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.745678][ T343] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.746118][ T343] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.746360][ T343] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.746795][ T343] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.747166][ T343] do_set_master (net/core/rtnetlink.c:2948) 
[ 23.747503][ T343] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.747836][ T343] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.748258][ T343] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.748598][ T343] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.748918][ T343] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.749278][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.749613][ T343] ? __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) 
[ 23.749939][ T343] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.750352][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.750661][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.750969][ T343] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.751337][ T343] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.751657][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.751979][ T343] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.752310][ T343] ? __create_object (mm/kmemleak.c:771) 
[ 23.752620][ T343] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.752929][ T343] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.753259][ T343] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.753640][ T343] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.753954][ T343] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.754304][ T343] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.754637][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.754953][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.755307][ T343] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.755615][ T343] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.756009][ T343] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.756336][ T343] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.756639][ T343] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.756976][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.757315][ T343] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.757628][ T343] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.757935][ T343] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.758260][ T343] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.758595][ T343] ? 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) 
[ 23.758904][ T343] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.759231][ T343] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.759553][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.759882][ T343] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.760189][ T343] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.760551][ T343] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.760904][ T343] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.761257][ T343] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.761577][ T343] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.761974][ T343] ___sys_sendmsg (net/socket.c:2670) 
[ 23.762310][ T343] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.762652][ T343] ? __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) 
[ 23.763034][ T343] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.763364][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.763697][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.764008][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.764328][ T343] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 23.764653][ T343] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.764986][ T343] __sys_sendmsg (net/socket.c:2700) 
[ 23.765301][ T343] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.765719][ T343] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.766057][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.766380][ T343] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.766713][ T343] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.767090][  T343] RIP: 0033:0x7f62d5a551e7
[ 23.767412][ T343] 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)
[   23.768565][  T343] RSP: 002b:00007ffc604885e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.769050][  T343] RAX: ffffffffffffffda RBX: 00007ffc60488d10 RCX: 00007f62d5a551e7
[   23.769523][  T343] RDX: 0000000000000000 RSI: 00007ffc60488650 RDI: 0000000000000005
[   23.769995][  T343] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.770468][  T343] R10: 000000002fd27910 R11: 0000000000000246 R12: 0000000000000004
[   23.770966][  T343] R13: 00000000686e1c6a R14: 0000000000499600 R15: 0000000000000000
| [   24.166549][  T346] ------------[ cut here ]------------
| [ 24.166941][ T346] WARNING: CPU: 2 PID: 346 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) 
| [   24.168050][  T346] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   24.169574][  T346] Tainted: [W]=WARN
[   24.169834][  T346] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 24.170260][ T346] 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) 
[ 24.170593][ T346] 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
[   24.171765][  T346] RSP: 0018:ffffc90000627000 EFLAGS: 00010246
[   24.172190][  T346] RAX: 0000000000000000 RBX: ffff88800ad89000 RCX: 0000000000000001
[   24.172709][  T346] RDX: 0000000000000000 RSI: ffffffffa709b941 RDI: ffffffffa68555e0
[   24.173195][  T346] RBP: ffffc900006270e8 R08: ffff88800ad89218 R09: 0000000000000000
[   24.173703][  T346] R10: ffffc90000627118 R11: ffffffffa7579160 R12: 1ffff920000c4e04
[   24.174200][  T346] R13: 00000000000005b6 R14: ffffc90000627118 R15: ffff88800ad89218
[   24.174698][  T346] FS:  00007f403d505800(0000) GS:ffff8880863b7000(0000) knlGS:0000000000000000
[   24.175271][  T346] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.175698][  T346] CR2: 0000000000436890 CR3: 0000000004d9b004 CR4: 0000000000772ef0
[   24.176184][  T346] PKRU: 55555554
[   24.176444][  T346] Call Trace:
[   24.176689][  T346]  <TASK>
[ 24.176887][ T346] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 24.177316][ T346] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.177652][ T346] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 24.177986][ T346] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 24.178344][ T346] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 24.178691][ T346] netif_set_mtu (net/core/dev.c:9652) 
[ 24.179036][ T346] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 24.179373][ T346] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 24.179716][ T346] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 24.179962][ T346] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 24.180334][ T346] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 24.180681][ T346] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 24.181014][ T346] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 24.181431][ T346] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 24.181798][ T346] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 24.182117][ T346] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 24.182452][ T346] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 24.182804][ T346] ? __dev_get_by_name (net/core/dev.c:865) 
[ 24.183136][ T346] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 24.183475][ T346] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 24.183821][ T346] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 24.184154][ T346] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 24.184490][ T346] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 24.184818][ T346] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 24.185142][ T346] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.185521][ T346] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 24.185843][ T346] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.186184][ T346] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.186511][ T346] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 24.186833][ T346] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.187156][ T346] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.187489][ T346] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 24.187831][ T346] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.188174][ T346] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 24.188555][ T346] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 24.188893][ T346] ? 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) 
[ 24.189231][ T346] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 24.189572][ T346] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 24.189905][ T346] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.190271][ T346] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 24.190607][ T346] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 24.190937][ T346] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 24.191319][ T346] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 24.191665][ T346] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 24.191997][ T346] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 24.192419][ T346] ___sys_sendmsg (net/socket.c:2670) 
[ 24.192754][ T346] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 24.193075][ T346] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 24.193412][ T346] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 24.193740][ T346] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 24.194073][ T346] ? __handle_mm_fault (mm/memory.c:6212) 
[ 24.194419][ T346] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 24.194745][ T346] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 24.195113][ T346] __sys_sendmsg (net/socket.c:2700) 
[ 24.195472][ T346] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 24.195837][ T346] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 24.196196][ T346] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 24.196543][ T346] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.196889][ T346] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 24.197269][ T346] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   24.197667][  T346] RIP: 0033:0x7f403d6d21e7
[ 24.197996][ T346] 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)
[   24.199237][  T346] RSP: 002b:00007fffe4b83e18 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   24.199728][  T346] RAX: ffffffffffffffda RBX: 00007fffe4b84540 RCX: 00007f403d6d21e7
[   24.200199][  T346] RDX: 0000000000000000 RSI: 00007fffe4b83e80 RDI: 0000000000000005
[   24.200931][  T346] RBP: 0000000000000008 R08: 00000000000000ac R09: 0000000000000000
[   24.201664][  T346] R10: 00007f403d5ca6f8 R11: 0000000000000246 R12: 00007fffe4b84560
[   24.202136][  T346] R13: 00000000686e1c6a R14: 0000000000499600 R15: 00007fffe4b83f68
| [   25.530791][  T363] ------------[ cut here ]------------
| [ 25.531323][ T363] WARNING: CPU: 3 PID: 363 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   25.532129][  T363] Modules linked in: 8021q bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   25.534038][  T363] Tainted: [W]=WARN
[   25.534391][  T363] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 25.534882][ T363] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 25.535317][ T363] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 1a 63 7b 00       	call   0x7b633b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   25.536773][  T363] RSP: 0018:ffffc900006f6ef0 EFLAGS: 00010246
[   25.537421][  T363] RAX: 0000000000000000 RBX: ffff88800c502000 RCX: 0000000000000001
[   25.538247][  T363] RDX: 0000000000000000 RSI: ffffffffa709b941 RDI: ffffffffa68555e0
[   25.538896][  T363] RBP: ffffc900006f6fe0 R08: 0000000000000000 R09: 0000000000000000
[   25.539578][  T363] R10: ffffc900006f7010 R11: ffffffffa7ea8918 R12: 1ffff920000dede2
[   25.540166][  T363] R13: 00000000000005dc R14: ffffc900006f7010 R15: ffff88800c502f08
[   25.540663][  T363] FS:  00007fb7b8a9e800(0000) GS:ffff888086437000(0000) knlGS:0000000000000000
[   25.541334][  T363] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   25.541893][  T363] CR2: 00000000004e6898 CR3: 0000000002566002 CR4: 0000000000772ef0
[   25.542628][  T363] PKRU: 55555554
[   25.542922][  T363] Call Trace:
[   25.543253][  T363]  <TASK>
[ 25.543483][ T363] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 25.543947][ T363] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 25.544533][ T363] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 25.545008][ T363] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 25.545554][ T363] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 25.546026][ T363] netif_set_mtu (net/core/dev.c:9652) 
[ 25.546610][ T363] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 25.547195][ T363] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 25.548003][ T363] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 25.548462][ T363] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 25.549254][ T363] br_add_if (net/bridge/br_if.c:697) bridge 
[ 25.549885][ T363] do_set_master (net/core/rtnetlink.c:2948) 
[ 25.550330][ T363] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 25.550771][ T363] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 25.551298][ T363] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 25.551740][ T363] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 25.552304][ T363] ? __kernel_text_address (kernel/extable.c:79) 
[ 25.552718][ T363] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 25.553160][ T363] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113) 
[ 25.553584][ T363] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 25.554195][ T363] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 25.554540][ T363] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 25.554933][ T363] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 25.555477][ T363] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 25.555904][ T363] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 25.556443][ T363] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 25.556892][ T363] ? __create_object (mm/kmemleak.c:771) 
[ 25.557404][ T363] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 25.557806][ T363] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 25.558263][ T363] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 25.558696][ T363] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 25.559212][ T363] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 25.559621][ T363] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 25.560009][ T363] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 25.560495][ T363] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 25.560881][ T363] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 25.561389][ T363] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 25.561812][ T363] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 25.562233][ T363] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 25.562566][ T363] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 25.562892][ T363] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 25.563244][ T363] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 25.563716][ T363] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 25.564086][ T363] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 25.564589][ T363] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 25.564976][ T363] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 25.565344][ T363] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 25.565749][ T363] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 25.566088][ T363] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 25.566432][ T363] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 25.566890][ T363] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 25.567318][ T363] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 25.567790][ T363] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 25.568147][ T363] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 25.568695][ T363] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 25.569135][ T363] ___sys_sendmsg (net/socket.c:2670) 
[ 25.569499][ T363] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 25.569834][ T363] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3096) 
[ 25.570257][ T363] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 25.570606][ T363] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 25.570939][ T363] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 25.571282][ T363] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 25.571608][ T363] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 25.571935][ T363] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 25.572289][ T363] __sys_sendmsg (net/socket.c:2700) 
[ 25.572638][ T363] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 25.573051][ T363] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 25.573423][ T363] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 25.573763][ T363] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 25.574098][ T363] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   25.574520][  T363] RIP: 0033:0x7fb7b8c6b1e7
[ 25.574865][ T363] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   25.576033][  T363] RSP: 002b:00007ffd9f11d5c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   25.576542][  T363] RAX: ffffffffffffffda RBX: 00007ffd9f11dcf0 RCX: 00007fb7b8c6b1e7
[   25.577035][  T363] RDX: 0000000000000000 RSI: 00007ffd9f11d630 RDI: 0000000000000005
[   25.577536][  T363] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   25.578030][  T363] R10: 0000000014314910 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