======================================
| [   16.786917][  T300] br: port 1(d1) entered forwarding state
| [   16.788157][  T300] ------------[ cut here ]------------
| [ 16.788506][ T300] WARNING: CPU: 2 PID: 300 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) 
| [   16.789167][  T300] Modules linked in:
[   16.790879][  T300] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 16.791300][ T300] 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) 
[ 16.791656][ T300] Code: 00 00 8b 05 97 05 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 fa fd 9b 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 97 05 bc 02    	mov    0x2bc0597(%rip),%eax        # 0x2bc059f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb c0 0c 00 00 	lea    0xcc0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa fd 9b 00       	call   0x9bfe1b
  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
[   16.792792][  T300] RSP: 0018:ffffc90000d16ef0 EFLAGS: 00010246
[   16.793303][  T300] RAX: 0000000000000000 RBX: ffff888005c7a000 RCX: 0000000000000001
[   16.793800][  T300] RDX: 0000000000000000 RSI: ffffffff9b510759 RDI: ffffffff9ac58280
[   16.794305][  T300] RBP: ffffc90000d16fd8 R08: 0000000000000000 R09: 0000000000000000
[   16.794797][  T300] R10: ffffc90000d17008 R11: ffffffff9c8ceab8 R12: 1ffff920001a2de2
[   16.795302][  T300] R13: 00000000000005dc R14: ffffc90000d17008 R15: ffff888005c7af48
[   16.795794][  T300] FS:  00007ff2809eb800(0000) GS:ffff8880c7e99000(0000) knlGS:0000000000000000
[   16.796360][  T300] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   16.796764][  T300] CR2: 00000000004e6e08 CR3: 000000000d020005 CR4: 0000000000772ef0
[   16.797287][  T300] PKRU: 55555554
[   16.797542][  T300] Call Trace:
[   16.797804][  T300]  <TASK>
[ 16.797982][ T300] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 16.798337][ T300] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 16.798663][ T300] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 16.799091][ T300] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 16.799414][ T300] netif_set_mtu (net/core/dev.c:9652) 
[ 16.799754][ T300] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 16.800112][ T300] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) 
[ 16.800512][ T300] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 16.800759][ T300] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 16.801094][ T300] br_add_if (net/bridge/br_if.c:697) 
[ 16.801356][ T300] do_set_master (net/core/rtnetlink.c:2948) 
[ 16.801677][ T300] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 16.802013][ T300] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 16.802364][ T300] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 16.802775][ T300] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 16.803121][ T300] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 16.803442][ T300] ? __kernel_text_address (kernel/extable.c:79) 
[ 16.803785][ T300] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 16.804144][ T300] ? __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) 
[ 16.804470][ T300] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 16.804875][ T300] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.805208][ T300] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.805529][ T300] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 16.805847][ T300] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 16.806207][ T300] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 16.806530][ T300] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 16.806847][ T300] ? __create_object (mm/kmemleak.c:771) 
[ 16.807187][ T300] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 16.807531][ T300] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 16.807869][ T300] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 16.808274][ T300] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 16.808625][ T300] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 16.808959][ T300] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 16.809292][ T300] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 16.809619][ T300] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 16.809942][ T300] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 16.810267][ T300] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 16.810596][ T300] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 16.810914][ T300] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 16.811248][ T300] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 16.811576][ T300] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 16.811901][ T300] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 16.812232][ T300] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 16.812555][ T300] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 16.812886][ T300] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 16.813215][ T300] ? 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) 
[ 16.813538][ T300] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 16.813884][ T300] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 16.814218][ T300] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 16.814558][ T300] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 16.814884][ T300] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 16.815213][ T300] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 16.815542][ T300] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 16.815865][ T300] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 16.816220][ T300] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 16.816627][ T300] ___sys_sendmsg (net/socket.c:2670) 
[ 16.816945][ T300] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 16.817290][ T300] ? __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) 
[ 16.817687][ T300] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 16.818021][ T300] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 16.818354][ T300] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 16.818690][ T300] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 16.819023][ T300] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 16.819341][ T300] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 16.819672][ T300] __sys_sendmsg (net/socket.c:2700) 
[ 16.819989][ T300] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 16.820394][ T300] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 16.820726][ T300] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.821061][ T300] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 16.821381][ T300] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   16.821773][  T300] RIP: 0033:0x7ff280bb81e7
[ 16.822120][ T300] 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)
[   16.823249][  T300] RSP: 002b:00007fff08762158 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   16.823736][  T300] RAX: ffffffffffffffda RBX: 00007fff08762880 RCX: 00007ff280bb81e7
[   16.824225][  T300] RDX: 0000000000000000 RSI: 00007fff087621c0 RDI: 0000000000000005
[   16.824699][  T300] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   16.825187][  T300] R10: 0000000013086910 R11: 0000000000000246 R12: 0000000000000004
[   16.825671][  T300] R13: 00000000686e49bd R14: 0000000000499600 R15: 0000000000000000
| [   17.893394][  T328] ------------[ cut here ]------------
| [ 17.893694][ T328] WARNING: CPU: 3 PID: 328 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) 
| [   17.895066][  T328] Modules linked in:
| [   17.895921][  T328] Tainted: [W]=WARN
[   17.896166][  T328] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 17.896550][ T328] 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) 
[ 17.896865][ T328] Code: 00 00 8b 05 97 05 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 fa fd 9b 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 97 05 bc 02    	mov    0x2bc0597(%rip),%eax        # 0x2bc059f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb c0 0c 00 00 	lea    0xcc0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa fd 9b 00       	call   0x9bfe1b
  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
[   17.897967][  T328] RSP: 0018:ffffc90000dd6ef0 EFLAGS: 00010246
[   17.898367][  T328] RAX: 0000000000000000 RBX: ffff888005c7a000 RCX: 0000000000000001
[   17.898818][  T328] RDX: 0000000000000000 RSI: ffffffff9b510759 RDI: ffffffff9ac58280
[   17.899286][  T328] RBP: ffffc90000dd6fd8 R08: 0000000000000000 R09: 0000000000000000
[   17.899746][  T328] R10: ffffc90000dd7008 R11: ffffffff9c8ceab8 R12: 1ffff920001bade2
[   17.900210][  T328] R13: 00000000000005dc R14: ffffc90000dd7008 R15: ffff888005c7af48
[   17.900673][  T328] FS:  00007f07fe6d2800(0000) GS:ffff8880c7f19000(0000) knlGS:0000000000000000
[   17.901214][  T328] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.901605][  T328] CR2: 00000000004e6e08 CR3: 000000000b60c001 CR4: 0000000000772ef0
[   17.902072][  T328] PKRU: 55555554
[   17.902305][  T328] Call Trace:
[   17.902542][  T328]  <TASK>
[ 17.902701][ T328] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 17.903028][ T328] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 17.903335][ T328] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 17.903710][ T328] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 17.904027][ T328] netif_set_mtu (net/core/dev.c:9652) 
[ 17.904330][ T328] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 17.904646][ T328] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) 
[ 17.905034][ T328] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 17.905265][ T328] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 17.905570][ T328] br_add_if (net/bridge/br_if.c:697) 
[ 17.905806][ T328] do_set_master (net/core/rtnetlink.c:2948) 
[ 17.906118][ T328] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 17.906425][ T328] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 17.906732][ T328] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 17.907128][ T328] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 17.907468][ T328] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 17.907767][ T328] ? __kernel_text_address (kernel/extable.c:79) 
[ 17.908080][ T328] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 17.908386][ T328] ? __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) 
[ 17.908689][ T328] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 17.909078][ T328] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.909384][ T328] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.909681][ T328] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 17.909983][ T328] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 17.910295][ T328] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 17.910596][ T328] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 17.910896][ T328] ? __create_object (mm/kmemleak.c:771) 
[ 17.911212][ T328] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 17.911520][ T328] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 17.911824][ T328] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 17.912227][ T328] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 17.912535][ T328] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 17.912839][ T328] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 17.913153][ T328] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 17.913457][ T328] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 17.913760][ T328] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 17.914071][ T328] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 17.914374][ T328] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 17.914670][ T328] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 17.914968][ T328] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 17.915280][ T328] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 17.915585][ T328] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 17.915885][ T328] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 17.916205][ T328] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 17.916518][ T328] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 17.916815][ T328] ? 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) 
[ 17.917126][ T328] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 17.917439][ T328] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 17.917737][ T328] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 17.918074][ T328] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 17.918390][ T328] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 17.918689][ T328] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 17.919010][ T328] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 17.919318][ T328] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 17.919617][ T328] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 17.920031][ T328] ___sys_sendmsg (net/socket.c:2670) 
[ 17.920341][ T328] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 17.920647][ T328] ? __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) 
[ 17.921034][ T328] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 17.921337][ T328] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 17.921637][ T328] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 17.921941][ T328] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 17.922252][ T328] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 17.922555][ T328] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 17.922882][ T328] __sys_sendmsg (net/socket.c:2700) 
[ 17.923200][ T328] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 17.923573][ T328] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 17.923888][ T328] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.924199][ T328] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 17.924501][ T328] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   17.924873][  T328] RIP: 0033:0x7f07fe89f1e7
[ 17.925195][ T328] 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)
[   17.926281][  T328] RSP: 002b:00007ffc5b4a2cb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   17.926737][  T328] RAX: ffffffffffffffda RBX: 00007ffc5b4a33e0 RCX: 00007f07fe89f1e7
[   17.927206][  T328] RDX: 0000000000000000 RSI: 00007ffc5b4a2d20 RDI: 0000000000000005
[   17.927664][  T328] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   17.928124][  T328] R10: 000000000cb68910 R11: 0000000000000246 R12: 0000000000000004
[   17.928573][  T328] R13: 00000000686e49be R14: 0000000000499600 R15: 0000000000000000
| [   18.978823][  T357] ------------[ cut here ]------------
| [ 18.979163][ T357] WARNING: CPU: 2 PID: 357 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   18.979772][  T357] Modules linked in:
| [   18.980659][  T357] Tainted: [W]=WARN
[   18.980900][  T357] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 18.982558][ T357] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 18.982888][ T357] Code: 00 00 8b 05 97 05 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 fa fd 9b 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 97 05 bc 02    	mov    0x2bc0597(%rip),%eax        # 0x2bc059f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb c0 0c 00 00 	lea    0xcc0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa fd 9b 00       	call   0x9bfe1b
  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
[   18.983987][  T357] RSP: 0018:ffffc90000ea6ef0 EFLAGS: 00010246
[   18.984393][  T357] RAX: 0000000000000000 RBX: ffff888005c7a000 RCX: 0000000000000001
[   18.984854][  T357] RDX: 0000000000000000 RSI: ffffffff9b510759 RDI: ffffffff9ac58280
[   18.985351][  T357] RBP: ffffc90000ea6fd8 R08: 0000000000000000 R09: 0000000000000000
[   18.985822][  T357] R10: ffffc90000ea7008 R11: ffffffff9c8ceab8 R12: 1ffff920001d4de2
[   18.986289][  T357] R13: 00000000000005dc R14: ffffc90000ea7008 R15: ffff888005c7af48
[   18.986750][  T357] FS:  00007f27c6a42800(0000) GS:ffff8880c7e99000(0000) knlGS:0000000000000000
[   18.987319][  T357] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   18.987704][  T357] CR2: 00000000004e6e08 CR3: 000000000e392003 CR4: 0000000000772ef0
[   18.988176][  T357] PKRU: 55555554
[   18.988416][  T357] Call Trace:
[   18.988649][  T357]  <TASK>
[ 18.988814][ T357] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 18.989158][ T357] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 18.989479][ T357] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 18.989862][ T357] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 18.990190][ T357] netif_set_mtu (net/core/dev.c:9652) 
[ 18.990503][ T357] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 18.990823][ T357] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) 
[ 18.991241][ T357] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 18.991480][ T357] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 18.991803][ T357] br_add_if (net/bridge/br_if.c:697) 
[ 18.992059][ T357] do_set_master (net/core/rtnetlink.c:2948) 
[ 18.992368][ T357] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 18.992682][ T357] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 18.993023][ T357] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 18.993419][ T357] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 18.993730][ T357] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 18.994054][ T357] ? __kernel_text_address (kernel/extable.c:79) 
[ 18.994367][ T357] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.994679][ T357] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113) 
[ 18.994992][ T357] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 18.995382][ T357] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.995693][ T357] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.996007][ T357] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 18.996323][ T357] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 18.996631][ T357] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.996940][ T357] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 18.997278][ T357] ? __create_object (mm/kmemleak.c:771) 
[ 18.997592][ T357] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 18.997902][ T357] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 18.998248][ T357] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 18.998632][ T357] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 18.998952][ T357] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 18.999282][ T357] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 18.999595][ T357] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.999909][ T357] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.000231][ T357] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.000537][ T357] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.000845][ T357] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.001173][ T357] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.001492][ T357] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.001804][ T357] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.002128][ T357] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.002439][ T357] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.002748][ T357] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.003084][ T357] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.003392][ T357] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 19.003707][ T357] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 19.004033][ T357] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.004344][ T357] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.004659][ T357] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.004971][ T357] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.005300][ T357] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.005627][ T357] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.005944][ T357] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.006261][ T357] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.006655][ T357] ___sys_sendmsg (net/socket.c:2670) 
[ 19.006964][ T357] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 19.007295][ T357] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3096) 
[ 19.007693][ T357] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.008017][ T357] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.008338][ T357] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.008655][ T357] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.008966][ T357] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 19.009297][ T357] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.009625][ T357] __sys_sendmsg (net/socket.c:2700) 
[ 19.009927][ T357] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 19.010318][ T357] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.010650][ T357] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.010962][ T357] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.011287][ T357] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.011667][  T357] RIP: 0033:0x7f27c6c0f1e7
[ 19.011986][ T357] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   19.013083][  T357] RSP: 002b:00007ffd35ce65e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.013552][  T357] RAX: ffffffffffffffda RBX: 00007ffd35ce6d10 RCX: 00007f27c6c0f1e7
[   19.014020][  T357] RDX: 0000000000000000 RSI: 00007ffd35ce6650 RDI: 0000000000000005
[   19.014471][  T357] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   19.014927][  T357] R10: 0000000026fbf910 R11: 0000000000000246 R12: 0000000000000004
[   19.015401][  T357] R13: 00000000686e49bf R14: 0000000000499600 R15: 0000000000000000
| [  109.916947][ T2553] ------------[ cut here ]------------
| [ 109.917267][ T2553] WARNING: CPU: 0 PID: 2553 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) 
| [  109.917877][ T2553] Modules linked in:
| [  109.918855][ T2553] Tainted: [W]=WARN
[  109.919094][ T2553] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 109.919470][ T2553] 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) 
[ 109.919776][ T2553] Code: 00 00 8b 05 97 05 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 fa fd 9b 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 97 05 bc 02    	mov    0x2bc0597(%rip),%eax        # 0x2bc059f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb c0 0c 00 00 	lea    0xcc0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa fd 9b 00       	call   0x9bfe1b
  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
[  109.920863][ T2553] RSP: 0018:ffffc90004196f60 EFLAGS: 00010246
[  109.921252][ T2553] RAX: 0000000000000000 RBX: ffff888005c7a000 RCX: 0000000000000001
[  109.921704][ T2553] RDX: 0000000000000000 RSI: ffffffff9b510759 RDI: ffffffff9ac58280
[  109.922162][ T2553] RBP: ffffc90004197050 R08: 0000000000000000 R09: 0000000000000000
[  109.922612][ T2553] R10: ffffc90004197080 R11: ffffffff97600130 R12: 1ffff92000832df0
[  109.923073][ T2553] R13: 00000000000005dc R14: ffffc90004197080 R15: ffff888005c7af48
[  109.923519][ T2553] FS:  00007ff66eb69800(0000) GS:ffff8880c7d99000(0000) knlGS:0000000000000000
[  109.924051][ T2553] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  109.924429][ T2553] CR2: 00000000004e6e20 CR3: 0000000011a8b002 CR4: 0000000000772ef0
[  109.924877][ T2553] PKRU: 55555554
[  109.925117][ T2553] Call Trace:
[  109.925346][ T2553]  <TASK>
[ 109.925497][ T2553] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 109.925796][ T2553] ? __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) 
[ 109.926187][ T2553] ? br_del_if (net/bridge/br_if.c:742) 
[ 109.926415][ T2553] ? do_set_master (net/core/rtnetlink.c:2932) 
[ 109.926720][ T2553] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 109.927029][ T2553] ? netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 109.927340][ T2553] ? netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 109.927637][ T2553] ? netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 109.927931][ T2553] ? ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 109.928243][ T2553] ? ___sys_sendmsg (net/socket.c:2670) 
[ 109.928540][ T2553] ? __sys_sendmsg (net/socket.c:2700) 
[ 109.928834][ T2553] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 109.929146][ T2553] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 109.929518][ T2553] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 109.929826][ T2553] netif_set_mtu (net/core/dev.c:9652) 
[ 109.930132][ T2553] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 109.930444][ T2553] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 109.930676][ T2553] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 109.930977][ T2553] br_del_if (net/bridge/br_if.c:743) 
[ 109.931231][ T2553] ? rtnl_is_locked (net/core/rtnetlink.c:169) 
[ 109.931529][ T2553] do_set_master (net/core/rtnetlink.c:2932) 
[ 109.931820][ T2553] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 109.932132][ T2553] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 109.932438][ T2553] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 109.932812][ T2553] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 109.933118][ T2553] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 109.933414][ T2553] ? __kernel_text_address (kernel/extable.c:79) 
[ 109.933716][ T2553] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 109.934039][ T2553] ? __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) 
[ 109.934342][ T2553] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 109.934714][ T2553] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 109.935029][ T2553] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 109.935325][ T2553] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 109.935621][ T2553] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 109.935924][ T2553] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 109.936235][ T2553] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 109.936537][ T2553] ? __create_object (mm/kmemleak.c:771) 
[ 109.936841][ T2553] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 109.937151][ T2553] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 109.937462][ T2553] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 109.937834][ T2553] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 109.938155][ T2553] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 109.938463][ T2553] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 109.938764][ T2553] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 109.939077][ T2553] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 109.939377][ T2553] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 109.939672][ T2553] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 109.939970][ T2553] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 109.940283][ T2553] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 109.940588][ T2553] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 109.940891][ T2553] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 109.941206][ T2553] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 109.941500][ T2553] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 109.941799][ T2553] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 109.942113][ T2553] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 109.942406][ T2553] ? 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) 
[ 109.942726][ T2553] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 109.943034][ T2553] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 109.943329][ T2553] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 109.943631][ T2553] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 109.943934][ T2553] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 109.944242][ T2553] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 109.944547][ T2553] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 109.944846][ T2553] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 109.945154][ T2553] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 109.945531][ T2553] ___sys_sendmsg (net/socket.c:2670) 
[ 109.945824][ T2553] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 109.946127][ T2553] ? __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) 
[ 109.946499][ T2553] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 109.946798][ T2553] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 109.947114][ T2553] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 109.947425][ T2553] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 109.947721][ T2553] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 109.948037][ T2553] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 109.948340][ T2553] __sys_sendmsg (net/socket.c:2700) 
[ 109.948633][ T2553] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 109.949010][ T2553] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 109.949317][ T2553] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 109.949624][ T2553] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 109.949921][ T2553] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  109.950299][ T2553] RIP: 0033:0x7ff66ed361e7
[ 109.950608][ T2553] 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)
[  109.951677][ T2553] RSP: 002b:00007ffce4dd1568 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  109.952137][ T2553] RAX: ffffffffffffffda RBX: 00007ffce4dd1c90 RCX: 00007ff66ed361e7
[  109.952582][ T2553] RDX: 0000000000000000 RSI: 00007ffce4dd15d0 RDI: 0000000000000005
[  109.953031][ T2553] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[  109.953480][ T2553] R10: 00007ff66ec33ee8 R11: 0000000000000246 R12: 0000000000000003
[  109.953924][ T2553] R13: 00000000686e4a1a R14: 0000000000499600 R15: 0000000000000000
| [  110.629051][ T2561] ------------[ cut here ]------------
| [ 110.629390][ T2561] WARNING: CPU: 3 PID: 2561 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) 
| [  110.630073][ T2561] Modules linked in:
| [  110.630956][ T2561] Tainted: [W]=WARN
[  110.631217][ T2561] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 110.631604][ T2561] 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) 
[ 110.631924][ T2561] Code: 00 00 8b 05 97 05 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 fa fd 9b 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 97 05 bc 02    	mov    0x2bc0597(%rip),%eax        # 0x2bc059f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb c0 0c 00 00 	lea    0xcc0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa fd 9b 00       	call   0x9bfe1b
  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
[  110.633059][ T2561] RSP: 0018:ffffc90004206f60 EFLAGS: 00010246
[  110.633521][ T2561] RAX: 0000000000000000 RBX: ffff888005c7a000 RCX: 0000000000000001
[  110.634034][ T2561] RDX: 0000000000000000 RSI: ffffffff9b510759 RDI: ffffffff9ac58280
[  110.634506][ T2561] RBP: ffffc90004207050 R08: 0000000000000000 R09: 0000000000000000
[  110.634970][ T2561] R10: ffffc90004207080 R11: ffffffff9bf8d1e0 R12: 1ffff92000840df0
[  110.635496][ T2561] R13: 00000000000005dc R14: ffffc90004207080 R15: ffff888005c7af48
[  110.635958][ T2561] FS:  00007f96ee047800(0000) GS:ffff8880c7f19000(0000) knlGS:0000000000000000
[  110.636582][ T2561] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  110.636985][ T2561] CR2: 00000000004e6e18 CR3: 0000000011bd8001 CR4: 0000000000772ef0
[  110.637508][ T2561] PKRU: 55555554
[  110.637747][ T2561] Call Trace:
[  110.637977][ T2561]  <TASK>
[ 110.638448][ T2561] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 110.638762][ T2561] ? __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) 
[ 110.639293][ T2561] ? br_del_if (net/bridge/br_if.c:742) 
[ 110.639527][ T2561] ? do_set_master (net/core/rtnetlink.c:2932) 
[ 110.639844][ T2561] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 110.640311][ T2561] ? netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 110.640656][ T2561] ? netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 110.641089][ T2561] ? netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 110.641401][ T2561] ? ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 110.641736][ T2561] ? ___sys_sendmsg (net/socket.c:2670) 
[ 110.642057][ T2561] ? __sys_sendmsg (net/socket.c:2700) 
[ 110.642375][ T2561] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 110.642687][ T2561] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 110.643094][ T2561] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 110.643415][ T2561] netif_set_mtu (net/core/dev.c:9652) 
[ 110.643723][ T2561] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 110.644053][ T2561] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 110.644307][ T2561] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 110.644617][ T2561] br_del_if (net/bridge/br_if.c:743) 
[ 110.644851][ T2561] ? rtnl_is_locked (net/core/rtnetlink.c:169) 
[ 110.645215][ T2561] do_set_master (net/core/rtnetlink.c:2932) 
[ 110.645563][ T2561] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 110.645875][ T2561] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 110.646221][ T2561] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 110.646629][ T2561] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 110.646938][ T2561] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 110.647292][ T2561] ? __kernel_text_address (kernel/extable.c:79) 
[ 110.647618][ T2561] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 110.647929][ T2561] ? __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) 
[ 110.648246][ T2561] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 110.648639][ T2561] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 110.648965][ T2561] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 110.649306][ T2561] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 110.649620][ T2561] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 110.649946][ T2561] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 110.650280][ T2561] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 110.650586][ T2561] ? __create_object (mm/kmemleak.c:771) 
[ 110.650905][ T2561] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 110.651251][ T2561] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 110.651563][ T2561] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 110.651946][ T2561] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 110.652336][ T2561] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 110.652710][ T2561] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 110.653047][ T2561] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 110.653365][ T2561] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 110.653679][ T2561] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 110.654015][ T2561] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 110.654336][ T2561] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 110.654645][ T2561] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 110.654960][ T2561] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 110.655285][ T2561] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 110.655597][ T2561] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 110.655908][ T2561] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 110.656247][ T2561] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 110.656569][ T2561] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 110.656877][ T2561] ? 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) 
[ 110.657215][ T2561] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 110.657538][ T2561] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 110.657858][ T2561] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 110.658187][ T2561] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 110.658500][ T2561] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 110.658810][ T2561] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 110.659148][ T2561] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 110.659461][ T2561] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 110.659766][ T2561] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 110.660184][ T2561] ___sys_sendmsg (net/socket.c:2670) 
[ 110.660489][ T2561] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 110.660803][ T2561] ? __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) 
[ 110.661211][ T2561] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 110.661532][ T2561] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 110.661848][ T2561] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 110.662173][ T2561] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 110.662484][ T2561] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 110.662793][ T2561] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 110.663147][ T2561] __sys_sendmsg (net/socket.c:2700) 
[ 110.663454][ T2561] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 110.663835][ T2561] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 110.664168][ T2561] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 110.664488][ T2561] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 110.664803][ T2561] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  110.665205][ T2561] RIP: 0033:0x7f96ee2141e7
[ 110.665539][ T2561] 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)
[  110.666678][ T2561] RSP: 002b:00007ffe6939f218 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  110.667225][ T2561] RAX: ffffffffffffffda RBX: 00007ffe6939f940 RCX: 00007f96ee2141e7
[  110.667708][ T2561] RDX: 0000000000000000 RSI: 00007ffe6939f280 RDI: 0000000000000005
[  110.668183][ T2561] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[  110.668655][ T2561] R10: 00007f96ee111ee8 R11: 0000000000000246 R12: 0000000000000003
[  110.669152][ T2561] R13: 00000000686e4a1b R14: 0000000000499600 R15: 0000000000000000
| [  111.411681][ T2569] ------------[ cut here ]------------
| [ 111.412324][ T2569] WARNING: CPU: 0 PID: 2569 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) 
| [  111.412916][ T2569] Modules linked in:
| [  111.413763][ T2569] Tainted: [W]=WARN
[  111.413986][ T2569] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 111.414372][ T2569] 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) 
[ 111.414683][ T2569] Code: 00 00 8b 05 97 05 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 fa fd 9b 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 97 05 bc 02    	mov    0x2bc0597(%rip),%eax        # 0x2bc059f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb c0 0c 00 00 	lea    0xcc0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa fd 9b 00       	call   0x9bfe1b
  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
[  111.415760][ T2569] RSP: 0018:ffffc900040d6f60 EFLAGS: 00010246
[  111.416146][ T2569] RAX: 0000000000000000 RBX: ffff888005c7a000 RCX: 0000000000000001
[  111.416588][ T2569] RDX: 0000000000000000 RSI: ffffffff9b510759 RDI: ffffffff9ac58280
[  111.417041][ T2569] RBP: ffffc900040d7050 R08: 0000000000000000 R09: 0000000000000000
[  111.417491][ T2569] R10: ffffc900040d7080 R11: ffffffff9bf8d1e0 R12: 1ffff9200081adf0
[  111.417932][ T2569] R13: 00000000000005dc R14: ffffc900040d7080 R15: ffff888005c7af48
[  111.418382][ T2569] FS:  00007fe57cef0800(0000) GS:ffff8880c7d99000(0000) knlGS:0000000000000000
[  111.418905][ T2569] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  111.419284][ T2569] CR2: 00000000004e6e10 CR3: 0000000011c23001 CR4: 0000000000772ef0
[  111.419730][ T2569] PKRU: 55555554
[  111.419951][ T2569] Call Trace:
[  111.420179][ T2569]  <TASK>
[ 111.420329][ T2569] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 111.420630][ T2569] ? __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) 
[ 111.421011][ T2569] ? br_del_if (net/bridge/br_if.c:742) 
[ 111.421240][ T2569] ? do_set_master (net/core/rtnetlink.c:2932) 
[ 111.421538][ T2569] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 111.421832][ T2569] ? netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 111.422141][ T2569] ? netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 111.422431][ T2569] ? netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 111.422722][ T2569] ? ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 111.423026][ T2569] ? ___sys_sendmsg (net/socket.c:2670) 
[ 111.423328][ T2569] ? __sys_sendmsg (net/socket.c:2700) 
[ 111.423620][ T2569] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 111.423917][ T2569] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 111.424292][ T2569] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 111.424598][ T2569] netif_set_mtu (net/core/dev.c:9652) 
[ 111.424895][ T2569] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 111.425215][ T2569] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 111.425440][ T2569] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 111.425743][ T2569] br_del_if (net/bridge/br_if.c:743) 
[ 111.425966][ T2569] ? rtnl_is_locked (net/core/rtnetlink.c:169) 
[ 111.426276][ T2569] do_set_master (net/core/rtnetlink.c:2932) 
[ 111.426573][ T2569] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 111.426873][ T2569] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 111.427179][ T2569] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 111.427569][ T2569] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 111.427873][ T2569] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 111.428176][ T2569] ? __kernel_text_address (kernel/extable.c:79) 
[ 111.428474][ T2569] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 111.428774][ T2569] ? __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) 
[ 111.429076][ T2569] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 111.429445][ T2569] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 111.429742][ T2569] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 111.430049][ T2569] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 111.430344][ T2569] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 111.430640][ T2569] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 111.430934][ T2569] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 111.431238][ T2569] ? __create_object (mm/kmemleak.c:771) 
[ 111.431537][ T2569] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 111.431831][ T2569] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 111.432139][ T2569] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 111.432509][ T2569] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 111.432845][ T2569] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 111.433158][ T2569] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 111.433454][ T2569] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 111.433756][ T2569] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 111.434058][ T2569] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 111.434353][ T2569] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 111.434655][ T2569] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 111.434949][ T2569] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 111.435255][ T2569] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 111.435555][ T2569] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 111.435854][ T2569] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 111.436154][ T2569] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 111.436453][ T2569] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 111.436756][ T2569] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 111.437063][ T2569] ? 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) 
[ 111.437375][ T2569] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 111.437674][ T2569] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 111.437968][ T2569] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 111.438274][ T2569] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 111.438575][ T2569] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 111.438871][ T2569] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 111.439188][ T2569] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 111.439487][ T2569] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 111.439778][ T2569] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 111.440163][ T2569] ___sys_sendmsg (net/socket.c:2670) 
[ 111.440456][ T2569] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 111.440749][ T2569] ? __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) 
[ 111.441127][ T2569] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 111.441437][ T2569] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 111.441734][ T2569] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 111.442040][ T2569] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 111.442336][ T2569] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 111.442632][ T2569] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 111.442933][ T2569] __sys_sendmsg (net/socket.c:2700) 
[ 111.443232][ T2569] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 111.443605][ T2569] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 111.443911][ T2569] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 111.444219][ T2569] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 111.444520][ T2569] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  111.444887][ T2569] RIP: 0033:0x7fe57d0bd1e7
[ 111.445202][ T2569] 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)
[  111.446285][ T2569] RSP: 002b:00007ffc0287d928 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  111.446732][ T2569] RAX: ffffffffffffffda RBX: 00007ffc0287e050 RCX: 00007fe57d0bd1e7
[  111.447187][ T2569] RDX: 0000000000000000 RSI: 00007ffc0287d990 RDI: 0000000000000005
[  111.447645][ T2569] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[  111.448094][ T2569] R10: 00007fe57cfbaee8 R11: 0000000000000246 R12: 0000000000000003


Finger prints:
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