======================================
| [   21.539406][  T282] vtep-host: entered promiscuous mode
| [   21.542109][  T282] ------------[ cut here ]------------
| [ 21.542475][ T282] WARNING: CPU: 2 PID: 282 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) 
| [   21.543117][  T282] Modules linked in: 8021q veth br_netfilter bridge stp llc
[   21.544965][  T282] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 21.545380][ T282] 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) 
[ 21.545719][ T282] Code: 00 00 8b 05 67 1b 38 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 aa d0 79 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 67 1b 38 02    	mov    0x2381b67(%rip),%eax        # 0x2381b6f
   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 aa d0 79 00       	call   0x79d0cb
  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
[   21.546861][  T282] RSP: 0018:ffffc90000606ef0 EFLAGS: 00010246
[   21.547402][  T282] RAX: 0000000000000000 RBX: ffff888009ad2000 RCX: 0000000000000001
[   21.547877][  T282] RDX: 0000000000000000 RSI: ffffffff8749f52e RDI: ffffffff86c5a5a0
[   21.548367][  T282] RBP: ffffc90000606fe0 R08: 0000000000000000 R09: 0000000000000000
[   21.548841][  T282] R10: ffffc90000607010 R11: ffffffff879798a0 R12: 1ffff920000c0de2
[   21.549327][  T282] R13: 00000000000005dc R14: ffffc90000607010 R15: ffff888009ad2f08
[   21.549806][  T282] FS:  00007f56220d3800(0000) GS:ffff8880acda7000(0000) knlGS:0000000000000000
[   21.550386][  T282] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   21.550789][  T282] CR2: 00000000004e6888 CR3: 000000000ee60001 CR4: 0000000000772ef0
[   21.551275][  T282] PKRU: 55555554
[   21.551523][  T282] Call Trace:
[   21.551767][  T282]  <TASK>
[ 21.551942][ T282] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 21.552277][ T282] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 21.552609][ T282] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 21.552933][ T282] netif_set_mtu (net/core/dev.c:9652) 
[ 21.553266][ T282] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 21.553604][ T282] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 21.553857][ T282] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 21.554314][ T282] br_add_if (net/bridge/br_if.c:697) bridge 
[ 21.554674][ T282] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 21.554999][ T282] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 21.555337][ T282] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 21.555737][ T282] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 21.556054][ T282] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 21.556380][ T282] ? __kernel_text_address (kernel/extable.c:79) 
[ 21.556704][ T282] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 21.557025][ T282] ? __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) 
[ 21.557360][ T282] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 21.557752][ T282] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 21.558074][ T282] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 21.558415][ T282] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 21.558735][ T282] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 21.559056][ T282] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 21.559384][ T282] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 21.559700][ T282] ? __create_object (mm/kmemleak.c:771) 
[ 21.560024][ T282] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 21.560356][ T282] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 21.560676][ T282] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 21.561069][ T282] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 21.561411][ T282] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 21.561738][ T282] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 21.562056][ T282] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 21.562403][ T282] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 21.562728][ T282] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 21.563047][ T282] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 21.563378][ T282] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 21.563696][ T282] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 21.564022][ T282] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 21.564353][ T282] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 21.564677][ T282] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 21.565002][ T282] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 21.565334][ T282] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 21.565665][ T282] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 21.565981][ T282] ? 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) 
[ 21.566324][ T282] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 21.566651][ T282] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 21.566976][ T282] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 21.567313][ T282] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 21.567633][ T282] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 21.567951][ T282] ? _copy_from_user (./arch/x86/include/asm/smap.h:29 ./arch/x86/include/asm/uaccess_64.h:134 ./arch/x86/include/asm/uaccess_64.h:141 ./include/linux/uaccess.h:178 lib/usercopy.c:18) 
[ 21.568286][ T282] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 21.568611][ T282] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 21.568929][ T282] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 21.569344][ T282] ___sys_sendmsg (net/socket.c:2670) 
[ 21.569666][ T282] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 21.569981][ T282] ? __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) 
[ 21.570396][ T282] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 21.570721][ T282] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 21.571044][ T282] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 21.571379][ T282] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 21.571699][ T282] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 21.572020][ T282] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 21.572357][ T282] __sys_sendmsg (net/socket.c:2700) 
[ 21.572671][ T282] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 21.573064][ T282] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 21.573407][ T282] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 21.573728][ T282] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 21.574055][ T282] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   21.574472][  T282] RIP: 0033:0x7f56222a01e7
[ 21.574810][ T282] 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)
[   21.575928][  T282] RSP: 002b:00007fff83c0be58 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   21.576414][  T282] RAX: ffffffffffffffda RBX: 00007fff83c0c590 RCX: 00007f56222a01e7
[   21.576894][  T282] RDX: 0000000000000000 RSI: 00007fff83c0bec0 RDI: 0000000000000005
[   21.577377][  T282] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   21.577854][  T282] R10: 0000000014112910 R11: 0000000000000246 R12: 0000000000000004
[   21.578344][  T282] R13: 00000000686e7aa5 R14: 0000000000499600 R15: 0000000000000000
| [   22.598173][  T290] ------------[ cut here ]------------
| [ 22.598494][ T290] WARNING: CPU: 3 PID: 290 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) 
| [   22.599103][  T290] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel 8021q veth br_netfilter bridge stp llc
| [   22.600384][  T290] Tainted: [W]=WARN
[   22.600630][  T290] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 22.601014][ T290] 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) 
[ 22.601351][ T290] Code: 00 00 8b 05 67 1b 38 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 aa d0 79 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 67 1b 38 02    	mov    0x2381b67(%rip),%eax        # 0x2381b6f
   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 aa d0 79 00       	call   0x79d0cb
  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
[   22.602459][  T290] RSP: 0018:ffffc900005b6ef0 EFLAGS: 00010246
[   22.602851][  T290] RAX: 0000000000000000 RBX: ffff888009ad2000 RCX: 0000000000000001
[   22.603319][  T290] RDX: 0000000000000000 RSI: ffffffff8749f52e RDI: ffffffff86c5a5a0
[   22.603786][  T290] RBP: ffffc900005b6fe0 R08: 0000000000000000 R09: 0000000000000000
[   22.604271][  T290] R10: ffffc900005b7010 R11: ffffffff882b19b8 R12: 1ffff920000b6de2
[   22.604737][  T290] R13: 00000000000005dc R14: ffffc900005b7010 R15: ffff888009ad2f08
[   22.605222][  T290] FS:  00007f2a451be800(0000) GS:ffff8880ace27000(0000) knlGS:0000000000000000
[   22.605764][  T290] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.606165][  T290] CR2: 00000000004e58f8 CR3: 000000000961d006 CR4: 0000000000772ef0
[   22.606634][  T290] PKRU: 55555554
[   22.606865][  T290] Call Trace:
[   22.607094][  T290]  <TASK>
[ 22.607262][ T290] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 22.607569][ T290] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.607881][ T290] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 22.608194][ T290] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 22.608575][ T290] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 22.608884][ T290] netif_set_mtu (net/core/dev.c:9652) 
[ 22.609215][ T290] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 22.609536][ T290] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 22.609959][ T290] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 22.610203][ T290] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 22.610615][ T290] br_add_if (net/bridge/br_if.c:697) bridge 
[ 22.610962][ T290] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 22.611288][ T290] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 22.611600][ T290] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 22.611988][ T290] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 22.612306][ T290] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 22.612610][ T290] ? __kernel_text_address (kernel/extable.c:79) 
[ 22.612921][ T290] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.613240][ T290] ? __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) 
[ 22.613552][ T290] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 22.613946][ T290] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.614263][ T290] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.614569][ T290] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 22.614875][ T290] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 22.615192][ T290] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.615506][ T290] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 22.615809][ T290] ? __create_object (mm/kmemleak.c:771) 
[ 22.616122][ T290] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 22.616439][ T290] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 22.616747][ T290] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 22.617126][ T290] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 22.617460][ T290] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 22.617774][ T290] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.618080][ T290] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.618408][ T290] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.618718][ T290] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 22.619022][ T290] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.619339][ T290] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.619646][ T290] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 22.619954][ T290] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.620273][ T290] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.620585][ T290] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 22.620899][ T290] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.621227][ T290] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 22.621549][ T290] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 22.621852][ T290] ? 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) 
[ 22.622170][ T290] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 22.622479][ T290] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 22.622792][ T290] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 22.623109][ T290] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 22.623423][ T290] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 22.623730][ T290] ? _copy_from_user (./arch/x86/include/asm/smap.h:29 ./arch/x86/include/asm/uaccess_64.h:134 ./arch/x86/include/asm/uaccess_64.h:141 ./include/linux/uaccess.h:178 lib/usercopy.c:18) 
[ 22.624046][ T290] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 22.624362][ T290] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 22.624667][ T290] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 22.625062][ T290] ___sys_sendmsg (net/socket.c:2670) 
[ 22.625388][ T290] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 22.625693][ T290] ? __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) 
[ 22.626073][ T290] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 22.626390][ T290] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.626697][ T290] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.627007][ T290] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.627325][ T290] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 22.627633][ T290] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.627944][ T290] __sys_sendmsg (net/socket.c:2700) 
[ 22.628255][ T290] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 22.628638][ T290] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 22.628955][ T290] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.629284][ T290] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 22.629592][ T290] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   22.629972][  T290] RIP: 0033:0x7f2a4538b1e7
[ 22.630299][ T290] 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)
[   22.631631][  T290] RSP: 002b:00007ffcd31b8d08 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   22.632092][  T290] RAX: ffffffffffffffda RBX: 00007ffcd31b9440 RCX: 00007f2a4538b1e7
[   22.632564][  T290] RDX: 0000000000000000 RSI: 00007ffcd31b8d70 RDI: 0000000000000005
[   22.633021][  T290] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000000
[   22.633494][  T290] R10: 0000000017aac910 R11: 0000000000000246 R12: 0000000000000003
[   22.633957][  T290] R13: 00000000686e7aa6 R14: 0000000000499600 R15: 0000000000000000
| [   24.387535][  T303] ------------[ cut here ]------------
| [ 24.387888][ T303] WARNING: CPU: 2 PID: 303 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) 
| [   24.388461][  T303] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel 8021q veth br_netfilter bridge stp llc
| [   24.389641][  T303] Tainted: [W]=WARN
[   24.389866][  T303] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 24.390236][ T303] 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) 
[ 24.390536][ T303] Code: 00 00 8b 05 67 1b 38 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 aa d0 79 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 67 1b 38 02    	mov    0x2381b67(%rip),%eax        # 0x2381b6f
   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 aa d0 79 00       	call   0x79d0cb
  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
[   24.392679][  T303] RSP: 0018:ffffc90000617140 EFLAGS: 00010246
[   24.393052][  T303] RAX: 0000000000000000 RBX: ffff888009642000 RCX: 0000000000000001
[   24.393488][  T303] RDX: 0000000000000000 RSI: ffffffff8749f52e RDI: ffffffff86c5a5a0
[   24.394456][  T303] RBP: ffffc90000617230 R08: ffff88800969a000 R09: 0000000000000000
[   24.394886][  T303] R10: ffffc900006175c8 R11: ffffffff88259728 R12: 1ffff920000c2e2c
[   24.395321][  T303] R13: 00000000000003e8 R14: ffffc90000617880 R15: ffff88800a431fe0
[   24.395746][  T303] FS:  00007f64f0849800(0000) GS:ffff8880acda7000(0000) knlGS:0000000000000000
[   24.396253][  T303] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.396615][  T303] CR2: 00000000004e58f8 CR3: 0000000004baa004 CR4: 0000000000772ef0
[   24.397049][  T303] PKRU: 55555554
[   24.397278][  T303] Call Trace:
[   24.397499][  T303]  <TASK>
[ 24.397652][ T303] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.397944][ T303] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 24.398240][ T303] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.398549][ T303] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 24.398838][ T303] ? is_bpf_text_address (kernel/bpf/core.c:777) 
[ 24.399127][ T303] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 24.399434][ T303] do_setlink.constprop.0 (net/core/rtnetlink.c:3106) 
[ 24.399728][ T303] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 24.400089][ T303] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 24.400384][ T303] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 24.400674][ T303] ? __kernel_text_address (kernel/extable.c:79) 
[ 24.400969][ T303] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.401292][ T303] ? __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) 
[ 24.401580][ T303] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 24.401935][ T303] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.402259][ T303] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.402554][ T303] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 24.402841][ T303] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 24.403131][ T303] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.403430][ T303] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 24.403721][ T303] ? __create_object (mm/kmemleak.c:771) 
[ 24.404020][ T303] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 24.404322][ T303] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 24.404609][ T303] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 24.404963][ T303] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 24.405266][ T303] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 24.405562][ T303] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.405851][ T303] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.406147][ T303] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.406446][ T303] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 24.406733][ T303] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.407022][ T303] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.407318][ T303] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 24.407608][ T303] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.407898][ T303] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.408209][ T303] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 24.408496][ T303] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.408788][ T303] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 24.409086][ T303] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 24.409381][ T303] ? 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) 
[ 24.409671][ T303] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 24.409963][ T303] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 24.410271][ T303] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 24.410565][ T303] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 24.410854][ T303] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 24.411161][ T303] ? _copy_from_user (./arch/x86/include/asm/smap.h:29 ./arch/x86/include/asm/uaccess_64.h:134 ./arch/x86/include/asm/uaccess_64.h:141 ./include/linux/uaccess.h:178 lib/usercopy.c:18) 
[ 24.411455][ T303] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 24.411749][ T303] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 24.412039][ T303] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 24.412420][ T303] ___sys_sendmsg (net/socket.c:2670) 
[ 24.412706][ T303] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 24.412993][ T303] ? __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) 
[ 24.413357][ T303] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 24.413650][ T303] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.413956][ T303] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.414261][ T303] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.414556][ T303] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 24.414844][ T303] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.415142][ T303] __sys_sendmsg (net/socket.c:2700) 
[ 24.415439][ T303] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 24.415799][ T303] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 24.416101][ T303] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.416400][ T303] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 24.416692][ T303] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   24.417053][  T303] RIP: 0033:0x7f64f0a161e7
[ 24.417362][ T303] 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)
[   24.418377][  T303] RSP: 002b:00007ffce2c3bf78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   24.418811][  T303] RAX: ffffffffffffffda RBX: 00007ffce2c3c6b0 RCX: 00007f64f0a161e7
[   24.419245][  T303] RDX: 0000000000000000 RSI: 00007ffce2c3bfe0 RDI: 0000000000000005
[   24.419672][  T303] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   24.420096][  T303] R10: 00007f64f0913498 R11: 0000000000000246 R12: 0000000000000003
[   24.420534][  T303] R13: 00000000686e7aa8 R14: 0000000000499600 R15: 0000000000000000
| [   24.426006][  T303] ------------[ cut here ]------------
| [ 24.426379][ T303] WARNING: CPU: 2 PID: 303 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) 
| [   24.427008][  T303] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel 8021q veth br_netfilter bridge stp llc
| [   24.428317][  T303] Tainted: [W]=WARN
[   24.428567][  T303] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 24.428972][ T303] 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) 
[ 24.429313][ T303] Code: 00 00 8b 05 67 1b 38 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 aa d0 79 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 67 1b 38 02    	mov    0x2381b67(%rip),%eax        # 0x2381b6f
   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 aa d0 79 00       	call   0x79d0cb
  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
[   24.430440][  T303] RSP: 0018:ffffc90000616de0 EFLAGS: 00010246
[   24.430849][  T303] RAX: 0000000000000000 RBX: ffff888009ad2000 RCX: 0000000000000001
[   24.431338][  T303] RDX: 0000000000000000 RSI: ffffffff8749f52e RDI: ffffffff86c5a5a0
[   24.431815][  T303] RBP: ffffc90000616ed0 R08: 0000000000000000 R09: 0000000000000000
[   24.432299][  T303] R10: ffffc90000616f00 R11: ffffffff879798a0 R12: 1ffff920000c2dc0
[   24.432804][  T303] R13: 00000000000003e8 R14: ffffc90000616f00 R15: ffff888009ad2f08
[   24.433295][  T303] FS:  00007f64f0849800(0000) GS:ffff8880acda7000(0000) knlGS:0000000000000000
[   24.433855][  T303] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.434266][  T303] CR2: 00000000004e58f8 CR3: 0000000004baa004 CR4: 0000000000772ef0
[   24.434751][  T303] PKRU: 55555554
[   24.434995][  T303] Call Trace:
[   24.435253][  T303]  <TASK>
[ 24.435424][ T303] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.435749][ T303] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 24.436075][ T303] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.436410][ T303] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 24.436732][ T303] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.437060][ T303] netif_set_mtu (net/core/dev.c:9652) 
[ 24.437393][ T303] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 24.437730][ T303] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.438054][ T303] ? packet_notifier (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/packet/af_packet.c:4283) 
[ 24.438385][ T303] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 24.438635][ T303] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 24.439077][ T303] br_device_event (net/bridge/br.c:142) bridge 
[ 24.439439][ T303] ? __pfx_br_device_event (net/bridge/br.c:29) bridge 
[ 24.439868][ T303] notifier_call_chain (kernel/notifier.c:87 (discriminator 2)) 
[ 24.440214][ T303] netif_set_mtu_ext (./include/linux/notifier.h:207 net/core/dev.c:9633) 
[ 24.440535][ T303] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.440859][ T303] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 24.441194][ T303] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.441529][ T303] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 24.441851][ T303] ? is_bpf_text_address (kernel/bpf/core.c:777) 
[ 24.442186][ T303] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 24.442516][ T303] do_setlink.constprop.0 (net/core/rtnetlink.c:3106) 
[ 24.442844][ T303] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 24.443257][ T303] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 24.443582][ T303] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 24.443907][ T303] ? __kernel_text_address (kernel/extable.c:79) 
[ 24.444244][ T303] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.444568][ T303] ? __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) 
[ 24.444898][ T303] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 24.445303][ T303] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.445632][ T303] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.445949][ T303] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 24.446279][ T303] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 24.446601][ T303] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.447191][ T303] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 24.447510][ T303] ? __create_object (mm/kmemleak.c:771) 
[ 24.447838][ T303] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 24.448174][ T303] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 24.448725][ T303] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 24.449121][ T303] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 24.449460][ T303] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 24.449788][ T303] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.450346][ T303] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.450678][ T303] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.451002][ T303] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 24.451566][ T303] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.451892][ T303] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.452223][ T303] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 24.452550][ T303] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.452877][ T303] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.453444][ T303] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 24.453773][ T303] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.454100][ T303] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 24.454671][ T303] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 24.454994][ T303] ? 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) 
[ 24.455338][ T303] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 24.455665][ T303] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 24.455996][ T303] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 24.456562][ T303] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 24.456887][ T303] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 24.457220][ T303] ? _copy_from_user (./arch/x86/include/asm/smap.h:29 ./arch/x86/include/asm/uaccess_64.h:134 ./arch/x86/include/asm/uaccess_64.h:141 ./include/linux/uaccess.h:178 lib/usercopy.c:18) 
[ 24.457560][ T303] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 24.458112][ T303] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 24.458447][ T303] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 24.458857][ T303] ___sys_sendmsg (net/socket.c:2670) 
[ 24.459414][ T303] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 24.459736][ T303] ? __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) 
[ 24.460136][ T303] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 24.460476][ T303] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.461031][ T303] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.461369][ T303] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.461694][ T303] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 24.462016][ T303] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.462355][ T303] __sys_sendmsg (net/socket.c:2700) 
[ 24.462676][ T303] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 24.463074][ T303] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 24.463423][ T303] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.463987][ T303] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 24.464321][ T303] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   24.464720][  T303] RIP: 0033:0x7f64f0a161e7
[ 24.465052][ T303] 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)
[   24.466433][  T303] RSP: 002b:00007ffce2c3bf78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   24.467146][  T303] RAX: ffffffffffffffda RBX: 00007ffce2c3c6b0 RCX: 00007f64f0a161e7
[   24.467636][  T303] RDX: 0000000000000000 RSI: 00007ffce2c3bfe0 RDI: 0000000000000005
[   24.468111][  T303] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   24.468601][  T303] R10: 00007f64f0913498 R11: 0000000000000246 R12: 0000000000000003
[   24.469080][  T303] R13: 00000000686e7aa8 R14: 0000000000499600 R15: 0000000000000000
| [   25.480705][  T306] ------------[ cut here ]------------
| [ 25.481068][ T306] WARNING: CPU: 2 PID: 306 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) 
| [   25.481670][  T306] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel 8021q veth br_netfilter bridge stp llc
| [   25.482862][  T306] Tainted: [W]=WARN
[   25.483100][  T306] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 25.484064][ T306] 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) 
[ 25.484389][ T306] Code: 00 00 8b 05 67 1b 38 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 aa d0 79 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 67 1b 38 02    	mov    0x2381b67(%rip),%eax        # 0x2381b6f
   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 aa d0 79 00       	call   0x79d0cb
  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
[   25.485416][  T306] RSP: 0018:ffffc90000637140 EFLAGS: 00010246
[   25.485792][  T306] RAX: 0000000000000000 RBX: ffff888009642000 RCX: 0000000000000001
[   25.486240][  T306] RDX: 0000000000000000 RSI: ffffffff8749f52e RDI: ffffffff86c5a5a0
[   25.486672][  T306] RBP: ffffc90000637230 R08: ffff8880091f6800 R09: 0000000000000000
[   25.487100][  T306] R10: ffffc900006375c8 R11: ffffffff88259728 R12: 1ffff920000c6e2c
[   25.487548][  T306] R13: 00000000000003e8 R14: ffffc90000637880 R15: ffff888004c4d560
[   25.487982][  T306] FS:  00007f64f8a87800(0000) GS:ffff8880acda7000(0000) knlGS:0000000000000000
[   25.488494][  T306] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   25.488861][  T306] CR2: 00000000004e58f8 CR3: 000000000b840006 CR4: 0000000000772ef0
[   25.489306][  T306] PKRU: 55555554
[   25.489537][  T306] Call Trace:
[   25.489762][  T306]  <TASK>
[ 25.489918][ T306] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 25.490227][ T306] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 25.490517][ T306] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 25.490812][ T306] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 25.491107][ T306] ? is_bpf_text_address (kernel/bpf/core.c:777) 
[ 25.491410][ T306] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 25.491714][ T306] do_setlink.constprop.0 (net/core/rtnetlink.c:3106) 
[ 25.492014][ T306] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 25.492394][ T306] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 25.492688][ T306] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 25.492982][ T306] ? __kernel_text_address (kernel/extable.c:79) 
[ 25.493290][ T306] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 25.493590][ T306] ? __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) 
[ 25.493902][ T306] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 25.494277][ T306] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 25.494571][ T306] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 25.494863][ T306] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 25.495164][ T306] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 25.495462][ T306] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 25.495751][ T306] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 25.496045][ T306] ? __create_object (mm/kmemleak.c:771) 
[ 25.496349][ T306] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 25.496646][ T306] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 25.496939][ T306] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 25.497320][ T306] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 25.497625][ T306] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 25.497923][ T306] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 25.498231][ T306] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 25.498540][ T306] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 25.498835][ T306] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 25.499125][ T306] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 25.499438][ T306] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 25.499733][ T306] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 25.500031][ T306] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 25.500336][ T306] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 25.500638][ T306] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 25.500930][ T306] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 25.501235][ T306] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 25.501540][ T306] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 25.501831][ T306] ? 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) 
[ 25.502126][ T306] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 25.502435][ T306] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 25.502742][ T306] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 25.503045][ T306] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 25.503350][ T306] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 25.503646][ T306] ? _copy_from_user (./arch/x86/include/asm/smap.h:29 ./arch/x86/include/asm/uaccess_64.h:134 ./arch/x86/include/asm/uaccess_64.h:141 ./include/linux/uaccess.h:178 lib/usercopy.c:18) 
[ 25.503952][ T306] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 25.504261][ T306] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 25.504555][ T306] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 25.504935][ T306] ___sys_sendmsg (net/socket.c:2670) 
[ 25.505237][ T306] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 25.505530][ T306] ? __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) 
[ 25.505890][ T306] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 25.506199][ T306] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 25.506494][ T306] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 25.506792][ T306] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 25.507083][ T306] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 25.507391][ T306] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 25.507691][ T306] __sys_sendmsg (net/socket.c:2700) 
[ 25.507981][ T306] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 25.508352][ T306] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 25.508655][ T306] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 25.508951][ T306] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 25.509261][ T306] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   25.509632][  T306] RIP: 0033:0x7f64f8c541e7
[ 25.509935][ T306] 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)
[   25.510963][  T306] RSP: 002b:00007fff8361a688 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   25.511420][  T306] RAX: ffffffffffffffda RBX: 00007fff8361adc0 RCX: 00007f64f8c541e7
[   25.511854][  T306] RDX: 0000000000000000 RSI: 00007fff8361a6f0 RDI: 0000000000000005
[   25.512301][  T306] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   25.512733][  T306] R10: 00007f64f8b51498 R11: 0000000000000246 R12: 0000000000000003
[   25.513177][  T306] R13: 00000000686e7aa9 R14: 0000000000499600 R15: 0000000000000000
| [   26.526380][  T309] ------------[ cut here ]------------
| [ 26.526693][ T309] WARNING: CPU: 1 PID: 309 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) 
| [   26.527258][  T309] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel 8021q veth br_netfilter bridge stp llc
| [   26.528639][  T309] Tainted: [W]=WARN
[   26.528854][  T309] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 26.529219][ T309] 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) 
[ 26.529513][ T309] Code: 00 00 8b 05 67 1b 38 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 aa d0 79 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 67 1b 38 02    	mov    0x2381b67(%rip),%eax        # 0x2381b6f
   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 aa d0 79 00       	call   0x79d0cb
  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
[   26.530529][  T309] RSP: 0018:ffffc90000747140 EFLAGS: 00010246
[   26.530884][  T309] RAX: 0000000000000000 RBX: ffff888009642000 RCX: 0000000000000001
[   26.531309][  T309] RDX: 0000000000000000 RSI: ffffffff8749f52e RDI: ffffffff86c5a5a0
[   26.531734][  T309] RBP: ffffc90000747230 R08: ffff88800efd5000 R09: 0000000000000000
[   26.532173][  T309] R10: ffffc900007475c8 R11: ffffffff88259728 R12: 1ffff920000e8e2c
[   26.532592][  T309] R13: 00000000000003e8 R14: ffffc90000747880 R15: ffff88800be983e0
[   26.533007][  T309] FS:  00007ffb37904800(0000) GS:ffff8880acd27000(0000) knlGS:0000000000000000
[   26.533503][  T309] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   26.533862][  T309] CR2: 00000000004e58f8 CR3: 000000000dc3f001 CR4: 0000000000772ef0
[   26.534288][  T309] PKRU: 55555554
[   26.534497][  T309] Call Trace:
[   26.534703][  T309]  <TASK>
[ 26.534845][ T309] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 26.535129][ T309] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 26.535415][ T309] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 26.535700][ T309] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 26.535976][ T309] ? is_bpf_text_address (kernel/bpf/core.c:777) 
[ 26.536279][ T309] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 26.536571][ T309] do_setlink.constprop.0 (net/core/rtnetlink.c:3106) 
[ 26.536851][ T309] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 26.537212][ T309] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 26.537493][ T309] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 26.537766][ T309] ? __kernel_text_address (kernel/extable.c:79) 
[ 26.538046][ T309] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 26.538335][ T309] ? __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) 
[ 26.538613][ T309] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 26.538957][ T309] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 26.539249][ T309] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 26.539524][ T309] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 26.539801][ T309] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 26.540080][ T309] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 26.540376][ T309] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 26.540659][ T309] ? __create_object (mm/kmemleak.c:771) 
[ 26.540937][ T309] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 26.541225][ T309] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 26.541503][ T309] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 26.541849][ T309] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 26.542134][ T309] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 26.542424][ T309] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 26.542699][ T309] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 26.542981][ T309] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 26.543268][ T309] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 26.543542][ T309] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 26.543831][ T309] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 26.544118][ T309] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 26.544414][ T309] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 26.544696][ T309] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 26.544977][ T309] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 26.545263][ T309] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 26.545540][ T309] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 26.545829][ T309] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 26.546109][ T309] ? 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) 
[ 26.546396][ T309] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 26.546675][ T309] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 26.546959][ T309] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 26.547250][ T309] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 26.547529][ T309] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 26.547805][ T309] ? _copy_from_user (./arch/x86/include/asm/smap.h:29 ./arch/x86/include/asm/uaccess_64.h:134 ./arch/x86/include/asm/uaccess_64.h:141 ./include/linux/uaccess.h:178 lib/usercopy.c:18) 
[ 26.548092][ T309] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 26.548389][ T309] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 26.548676][ T309] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 26.549034][ T309] ___sys_sendmsg (net/socket.c:2670) 
[ 26.549315][ T309] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 26.549592][ T309] ? __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) 
[ 26.549939][ T309] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 26.550233][ T309] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 26.550512][ T309] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 26.550797][ T309] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 26.551074][ T309] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 26.551357][ T309] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 26.551644][ T309] __sys_sendmsg (net/socket.c:2700) 
[ 26.551925][ T309] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 26.552284][ T309] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 26.552589][ T309] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 26.552869][ T309] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 26.553158][ T309] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   26.553500][  T309] RIP: 0033:0x7ffb37ad11e7
[ 26.553789][ T309] 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)
[   26.554804][  T309] RSP: 002b:00007ffccaba5b08 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   26.555232][  T309] RAX: ffffffffffffffda RBX: 00007ffccaba6240 RCX: 00007ffb37ad11e7
[   26.555647][  T309] RDX: 0000000000000000 RSI: 00007ffccaba5b70 RDI: 0000000000000005
[   26.556061][  T309] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   26.556497][  T309] R10: 00007ffb379ce498 R11: 0000000000000246 R12: 0000000000000003
[   26.556913][  T309] R13: 00000000686e7aaa R14: 0000000000499600 R15: 0000000000000000
| [   27.936560][   T12] ------------[ cut here ]------------
| [ 27.936884][ T12] WARNING: CPU: 3 PID: 12 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) 
| [   27.937435][   T12] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel 8021q veth br_netfilter bridge stp llc
| [   27.938917][   T12] Tainted: [W]=WARN
[   27.939164][   T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   27.939556][   T12] Workqueue: netns cleanup_net
[ 27.939882][ T12] 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) 
[ 27.940209][ T12] Code: 00 00 8b 05 67 1b 38 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 aa d0 79 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 67 1b 38 02    	mov    0x2381b67(%rip),%eax        # 0x2381b6f
   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 aa d0 79 00       	call   0x79d0cb
  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
[   27.941335][   T12] RSP: 0018:ffffc900000c75b0 EFLAGS: 00010246
[   27.941726][   T12] RAX: 0000000000000000 RBX: ffff888009ad2000 RCX: 0000000000000001
[   27.942197][   T12] RDX: 0000000000000000 RSI: ffffffff8749f52e RDI: ffffffff86c5a5a0
[   27.942664][   T12] RBP: ffffc900000c76a0 R08: 0000000000000000 R09: 0000000000000000
[   27.943127][   T12] R10: ffffc900000c76d0 R11: ffffffff840914d8 R12: 1ffff92000018eba
[   27.943597][   T12] R13: 00000000000003e8 R14: ffffc900000c76d0 R15: ffff888009ad2f08
[   27.944074][   T12] FS:  0000000000000000(0000) GS:ffff8880ace27000(0000) knlGS:0000000000000000
[   27.944622][   T12] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   27.945009][   T12] CR2: 00007f252030b000 CR3: 0000000031336003 CR4: 0000000000772ef0
[   27.945557][   T12] PKRU: 55555554
[   27.945796][   T12] Call Trace:
[   27.946071][   T12]  <TASK>
[ 27.946242][ T12] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 27.946556][ T12] ? __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) 
[ 27.946938][ T12] ? br_del_if (net/bridge/br_if.c:742) bridge 
[ 27.947290][ T12] ? br_device_event (net/bridge/br.c:141) bridge 
[ 27.947646][ T12] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 27.947951][ T12] ? ops_undo_list (net/core/net_namespace.c:250) 
[ 27.948269][ T12] ? cleanup_net (net/core/net_namespace.c:684) 
[ 27.948575][ T12] ? process_one_work (kernel/workqueue.c:3238) 
[ 27.948881][ T12] ? worker_thread (kernel/workqueue.c:3315 kernel/workqueue.c:3402) 
[ 27.949193][ T12] ? kthread (kernel/kthread.c:464) 
[ 27.949426][ T12] ? ret_from_fork (arch/x86/kernel/process.c:148) 
[ 27.949729][ T12] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
[ 27.950041][ T12] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 27.950375][ T12] netif_set_mtu (net/core/dev.c:9652) 
[ 27.950687][ T12] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 27.951011][ T12] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 27.951252][ T12] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 27.951668][ T12] br_del_if (net/bridge/br_if.c:743) bridge 
[ 27.952003][ T12] br_device_event (net/bridge/br.c:141) bridge 
[ 27.952347][ T12] ? __pfx_br_device_event (net/bridge/br.c:29) bridge 
[ 27.952758][ T12] ? netconsole_netdev_event (drivers/net/netconsole.c:1474) 
[ 27.953078][ T12] notifier_call_chain (kernel/notifier.c:87 (discriminator 2)) 
[ 27.953402][ T12] unregister_netdevice_many_notify (net/core/dev.c:12107) 
[ 27.953797][ T12] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3189 kernel/locking/mutex.h:47 kernel/locking/mutex.c:67) 
[ 27.954106][ T12] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:12032) 
[ 27.954497][ T12] ? unregister_netdevice_queue (net/core/dev.c:12004) 
[ 27.954877][ T12] ? __pfx_unregister_netdevice_queue (net/core/dev.c:12003) 
[ 27.955273][ T12] ? __pfx_unregister_netdevice_queue (net/core/dev.c:12003) 
[ 27.955670][ T12] default_device_exit_batch (net/core/dev.c:12673) 
[ 27.955978][ T12] ? __pfx_default_device_exit_batch (net/core/dev.c:12648) 
[ 27.956378][ T12] ops_undo_list (net/core/net_namespace.c:250) 
[ 27.956695][ T12] ? __pfx_ops_undo_list (net/core/net_namespace.c:222) 
[ 27.957002][ T12] ? cleanup_net (./include/linux/list.h:183 net/core/net_namespace.c:679) 
[ 27.957326][ T12] cleanup_net (net/core/net_namespace.c:684) 
[ 27.957641][ T12] ? __pfx_cleanup_net (net/core/net_namespace.c:648) 
[ 27.957953][ T12] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 27.958274][ T12] process_one_work (kernel/workqueue.c:3238) 
[ 27.958595][ T12] ? __pfx_process_one_work (kernel/workqueue.c:3140) 
[ 27.958913][ T12] ? assign_work (kernel/workqueue.c:1200) 
[ 27.959235][ T12] worker_thread (kernel/workqueue.c:3315 kernel/workqueue.c:3402) 
[ 27.959554][ T12] ? __pfx_worker_thread (kernel/workqueue.c:3348) 
[ 27.959865][ T12] kthread (kernel/kthread.c:464) 
[ 27.960102][ T12] ? __pfx_kthread (kernel/kthread.c:413) 
[ 27.960417][ T12] ? ret_from_fork (arch/x86/kernel/process.c:147) 
[ 27.960721][ T12] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 27.961029][ T12] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 27.961345][ T12] ? __pfx_kthread (kernel/kthread.c:413) 
[ 27.961655][ T12] ret_from_fork (arch/x86/kernel/process.c:148) 
[ 27.961958][ T12] ? __pfx_kthread (kernel/kthread.c:413) 


Finger prints:
netif_set_mtu_ext:rtnl_newlink:rtnetlink_rcv_msg:netlink_rcv_skb:netlink_unicast
netif_set_mtu_ext:netif_set_mtu:dev_set_mtu:br_mtu_auto_adjust:br_device_event
netif_set_mtu_ext:netif_set_mtu:dev_set_mtu:br_mtu_auto_adjust:br_del_if
netif_set_mtu_ext:netif_set_mtu:dev_set_mtu:br_mtu_auto_adjust:br_add_if