======================================
| [   16.800683][  T298] br: port 1(d1) entered forwarding state
| [   16.801939][  T298] ------------[ cut here ]------------
| [ 16.802262][ T298] WARNING: CPU: 3 PID: 298 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) 
| [   16.803159][  T298] Modules linked in:
[   16.804188][  T298] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 16.804594][ T298] 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) 
[ 16.804960][ T298] 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
[   16.806046][  T298] RSP: 0018:ffffc90000d46ef0 EFLAGS: 00010246
[   16.806448][  T298] RAX: 0000000000000000 RBX: ffff888005532000 RCX: 0000000000000001
[   16.806919][  T298] RDX: 0000000000000000 RSI: ffffffff8dd10759 RDI: ffffffff8d458280
[   16.807377][  T298] RBP: ffffc90000d46fd8 R08: 0000000000000000 R09: 0000000000000000
[   16.807845][  T298] R10: ffffc90000d47008 R11: ffffffff8f0ceab8 R12: 1ffff920001a8de2
[   16.808327][  T298] R13: 00000000000005dc R14: ffffc90000d47008 R15: ffff888005532f48
[   16.808781][  T298] FS:  00007f7f36c22800(0000) GS:ffff8880dcd19000(0000) knlGS:0000000000000000
[   16.809333][  T298] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   16.809739][  T298] CR2: 00000000004e6e08 CR3: 0000000005322001 CR4: 0000000000772ef0
[   16.810197][  T298] PKRU: 55555554
[   16.810454][  T298] Call Trace:
[   16.810728][  T298]  <TASK>
[ 16.810893][ T298] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 16.811204][ T298] ? preempt_schedule_common (./arch/x86/include/asm/preempt.h:85 kernel/sched/core.c:6967) 
[ 16.811534][ T298] ? preempt_schedule_thunk (arch/x86/entry/thunk.S:12) 
[ 16.811861][ T298] netif_set_mtu (net/core/dev.c:9652) 
[ 16.812164][ T298] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 16.812483][ T298] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) 
[ 16.812963][ T298] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 16.813201][ T298] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 16.813521][ T298] br_add_if (net/bridge/br_if.c:697) 
[ 16.813761][ T298] do_set_master (net/core/rtnetlink.c:2948) 
[ 16.814066][ T298] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 16.814410][ T298] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 16.814723][ T298] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 16.815115][ T298] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 16.815435][ T298] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 16.815740][ T298] ? __kernel_text_address (kernel/extable.c:79) 
[ 16.816040][ T298] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 16.816349][ T298] ? __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) 
[ 16.816649][ T298] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 16.817018][ T298] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.817335][ T298] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.817634][ T298] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 16.817931][ T298] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 16.818235][ T298] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 16.818556][ T298] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 16.818862][ T298] ? __create_object (mm/kmemleak.c:771) 
[ 16.819171][ T298] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 16.819476][ T298] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 16.819801][ T298] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 16.820174][ T298] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 16.820516][ T298] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 16.820823][ T298] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 16.821119][ T298] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 16.821434][ T298] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 16.821732][ T298] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 16.822030][ T298] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 16.822360][ T298] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 16.822663][ T298] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 16.822975][ T298] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 16.823276][ T298] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 16.823585][ T298] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 16.823890][ T298] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 16.824186][ T298] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 16.824513][ T298] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 16.824811][ T298] ? 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) 
[ 16.825111][ T298] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 16.825423][ T298] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 16.825722][ T298] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 16.826025][ T298] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 16.826349][ T298] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 16.826660][ T298] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 16.826972][ T298] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 16.827277][ T298] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 16.827581][ T298] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 16.827962][ T298] ___sys_sendmsg (net/socket.c:2670) 
[ 16.828257][ T298] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 16.828563][ T298] ? __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) 
[ 16.828944][ T298] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 16.829243][ T298] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 16.829549][ T298] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 16.829852][ T298] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 16.830150][ T298] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 16.830475][ T298] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 16.830784][ T298] __sys_sendmsg (net/socket.c:2700) 
[ 16.831079][ T298] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 16.831463][ T298] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 16.831776][ T298] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.832072][ T298] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 16.832382][ T298] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   16.832753][  T298] RIP: 0033:0x7f7f36def1e7
[ 16.833091][ T298] 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)
[   16.834169][  T298] RSP: 002b:00007ffffdf03498 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   16.834642][  T298] RAX: ffffffffffffffda RBX: 00007ffffdf03bc0 RCX: 00007f7f36def1e7
[   16.835099][  T298] RDX: 0000000000000000 RSI: 00007ffffdf03500 RDI: 0000000000000005
[   16.835562][  T298] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   16.836013][  T298] R10: 0000000004257910 R11: 0000000000000246 R12: 0000000000000004
[   16.836467][  T298] R13: 00000000686e1fce R14: 0000000000499600 R15: 0000000000000000
| [   17.887206][  T326] ------------[ cut here ]------------
| [ 17.887547][ T326] WARNING: CPU: 2 PID: 326 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) 
| [   17.888151][  T326] Modules linked in:
| [   17.889372][  T326] Tainted: [W]=WARN
[   17.889881][  T326] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 17.890512][ T326] 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) 
[ 17.890978][ T326] 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
[   17.892073][  T326] RSP: 0018:ffffc90000df6ef0 EFLAGS: 00010246
[   17.892489][  T326] RAX: 0000000000000000 RBX: ffff888005532000 RCX: 0000000000000001
[   17.892968][  T326] RDX: 0000000000000000 RSI: ffffffff8dd10759 RDI: ffffffff8d458280
[   17.893437][  T326] RBP: ffffc90000df6fd8 R08: 0000000000000000 R09: 0000000000000000
[   17.893897][  T326] R10: ffffc90000df7008 R11: ffffffff8f0ceab8 R12: 1ffff920001bede2
[   17.894366][  T326] R13: 00000000000005dc R14: ffffc90000df7008 R15: ffff888005532f48
[   17.894828][  T326] FS:  00007f7e83b12800(0000) GS:ffff8880dcc99000(0000) knlGS:0000000000000000
[   17.895371][  T326] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.895755][  T326] CR2: 00000000004e6e08 CR3: 000000000b7fc002 CR4: 0000000000772ef0
[   17.896220][  T326] PKRU: 55555554
[   17.896479][  T326] Call Trace:
[   17.896723][  T326]  <TASK>
[ 17.896889][ T326] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 17.897211][ T326] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 17.897545][ T326] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 17.897932][ T326] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 17.898245][ T326] netif_set_mtu (net/core/dev.c:9652) 
[ 17.898570][ T326] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 17.898890][ T326] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) 
[ 17.899279][ T326] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 17.899533][ T326] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 17.899858][ T326] br_add_if (net/bridge/br_if.c:697) 
[ 17.900107][ T326] do_set_master (net/core/rtnetlink.c:2948) 
[ 17.900437][ T326] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 17.900755][ T326] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 17.901070][ T326] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 17.901491][ T326] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 17.901804][ T326] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 17.902120][ T326] ? __kernel_text_address (kernel/extable.c:79) 
[ 17.902450][ T326] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 17.902768][ T326] ? __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) 
[ 17.903130][ T326] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 17.903524][ T326] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.903841][ T326] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.904147][ T326] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 17.904490][ T326] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 17.904806][ T326] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 17.905119][ T326] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 17.905436][ T326] ? __create_object (mm/kmemleak.c:771) 
[ 17.905750][ T326] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 17.906062][ T326] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 17.906390][ T326] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 17.906782][ T326] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 17.907108][ T326] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 17.907430][ T326] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 17.907740][ T326] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 17.908056][ T326] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 17.908387][ T326] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 17.908699][ T326] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 17.909011][ T326] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 17.909331][ T326] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 17.909649][ T326] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 17.909960][ T326] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 17.910273][ T326] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 17.910598][ T326] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 17.910916][ T326] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 17.911234][ T326] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 17.911553][ T326] ? 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) 
[ 17.911871][ T326] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 17.912182][ T326] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 17.912534][ T326] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 17.912898][ T326] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 17.913214][ T326] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 17.913540][ T326] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 17.913859][ T326] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 17.914181][ T326] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 17.914499][ T326] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 17.914899][ T326] ___sys_sendmsg (net/socket.c:2670) 
[ 17.915206][ T326] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 17.915527][ T326] ? __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) 
[ 17.915909][ T326] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 17.916225][ T326] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 17.916565][ T326] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 17.916887][ T326] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 17.917195][ T326] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 17.917515][ T326] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 17.917831][ T326] __sys_sendmsg (net/socket.c:2700) 
[ 17.918145][ T326] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 17.918540][ T326] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 17.918869][ T326] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.919181][ T326] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 17.919505][ T326] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   17.919883][  T326] RIP: 0033:0x7f7e83cdf1e7
[ 17.920209][ T326] 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)
[   17.921314][  T326] RSP: 002b:00007ffec0c9c0f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   17.921788][  T326] RAX: ffffffffffffffda RBX: 00007ffec0c9c820 RCX: 00007f7e83cdf1e7
[   17.922243][  T326] RDX: 0000000000000000 RSI: 00007ffec0c9c160 RDI: 0000000000000005
[   17.922709][  T326] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   17.923185][  T326] R10: 000000002146e910 R11: 0000000000000246 R12: 0000000000000004
[   17.923648][  T326] R13: 00000000686e1fcf R14: 0000000000499600 R15: 0000000000000000
| [   18.961750][  T355] ------------[ cut here ]------------
| [ 18.962061][ T355] WARNING: CPU: 1 PID: 355 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) 
| [   18.962697][  T355] Modules linked in:
| [   18.963614][  T355] Tainted: [W]=WARN
[   18.963857][  T355] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 18.964257][ T355] 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) 
[ 18.964604][ T355] 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
[   18.965755][  T355] RSP: 0018:ffffc90000e96ef0 EFLAGS: 00010246
[   18.966168][  T355] RAX: 0000000000000000 RBX: ffff888005532000 RCX: 0000000000000001
[   18.966641][  T355] RDX: 0000000000000000 RSI: ffffffff8dd10759 RDI: ffffffff8d458280
[   18.967112][  T355] RBP: ffffc90000e96fd8 R08: 0000000000000000 R09: 0000000000000000
[   18.967589][  T355] R10: ffffc90000e97008 R11: ffffffff8f0ceab8 R12: 1ffff920001d2de2
[   18.968063][  T355] R13: 00000000000005dc R14: ffffc90000e97008 R15: ffff888005532f48
[   18.968760][  T355] FS:  00007f3bf14cf800(0000) GS:ffff8880dcc19000(0000) knlGS:0000000000000000
[   18.969295][  T355] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   18.969789][  T355] CR2: 00000000004e6e08 CR3: 000000000e26c002 CR4: 0000000000772ef0
[   18.970261][  T355] PKRU: 55555554
[   18.970510][  T355] Call Trace:
[   18.970748][  T355]  <TASK>
[ 18.970916][ T355] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 18.971244][ T355] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 18.971568][ T355] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 18.971966][ T355] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 18.972285][ T355] netif_set_mtu (net/core/dev.c:9652) 
[ 18.972619][ T355] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 18.972958][ T355] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) 
[ 18.973364][ T355] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 18.973607][ T355] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 18.973927][ T355] br_add_if (net/bridge/br_if.c:697) 
[ 18.974174][ T355] do_set_master (net/core/rtnetlink.c:2948) 
[ 18.974494][ T355] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 18.974816][ T355] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 18.975133][ T355] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 18.975542][ T355] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 18.975856][ T355] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 18.976172][ T355] ? __kernel_text_address (kernel/extable.c:79) 
[ 18.976499][ T355] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.976825][ T355] ? __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) 
[ 18.977140][ T355] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 18.977547][ T355] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.977865][ T355] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.978177][ T355] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 18.978498][ T355] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 18.978812][ T355] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.979129][ T355] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 18.979455][ T355] ? __create_object (mm/kmemleak.c:771) 
[ 18.979771][ T355] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 18.980087][ T355] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 18.980418][ T355] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 18.980812][ T355] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 18.981128][ T355] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 18.981459][ T355] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 18.981768][ T355] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.982084][ T355] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.982409][ T355] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 18.982726][ T355] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 18.983055][ T355] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 18.983381][ T355] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 18.983696][ T355] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 18.984013][ T355] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.984351][ T355] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 18.984668][ T355] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 18.984987][ T355] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 18.985327][ T355] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 18.985641][ T355] ? 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) 
[ 18.985957][ T355] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 18.986282][ T355] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 18.986610][ T355] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.986929][ T355] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 18.987256][ T355] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 18.987589][ T355] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 18.987914][ T355] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 18.988230][ T355] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 18.988556][ T355] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 18.988958][ T355] ___sys_sendmsg (net/socket.c:2670) 
[ 18.989268][ T355] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 18.989600][ T355] ? __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) 
[ 18.989997][ T355] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 18.990330][ T355] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.990646][ T355] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.990965][ T355] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.991277][ T355] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 18.991610][ T355] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 18.991932][ T355] __sys_sendmsg (net/socket.c:2700) 
[ 18.992248][ T355] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 18.992645][ T355] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 18.993005][ T355] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.993335][ T355] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 18.993655][ T355] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   18.994045][  T355] RIP: 0033:0x7f3bf169c1e7
[ 18.994382][ T355] 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)
[   18.995516][  T355] RSP: 002b:00007ffca72b0e78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   18.995994][  T355] RAX: ffffffffffffffda RBX: 00007ffca72b15a0 RCX: 00007f3bf169c1e7
[   18.996476][  T355] RDX: 0000000000000000 RSI: 00007ffca72b0ee0 RDI: 0000000000000005
[   18.996954][  T355] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   18.997432][  T355] R10: 000000000dcbe910 R11: 0000000000000246 R12: 0000000000000004
[   18.997902][  T355] R13: 00000000686e1fd0 R14: 0000000000499600 R15: 0000000000000000
| [  110.301502][ T2549] ------------[ cut here ]------------
| [ 110.301817][ T2549] WARNING: CPU: 1 PID: 2549 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) 
| [  110.303960][ T2549] Modules linked in:
| [  110.304996][ T2549] Tainted: [W]=WARN
[  110.305223][ T2549] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 110.305760][ T2549] 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) 
[ 110.306083][ T2549] 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
[  110.307185][ T2549] RSP: 0018:ffffc90003e46f60 EFLAGS: 00010246
[  110.307570][ T2549] RAX: 0000000000000000 RBX: ffff888005532000 RCX: 0000000000000001
[  110.308012][ T2549] RDX: 0000000000000000 RSI: ffffffff8dd10759 RDI: ffffffff8d458280
[  110.308472][ T2549] RBP: ffffc90003e47050 R08: 0000000000000000 R09: 0000000000000000
[  110.308917][ T2549] R10: ffffc90003e47080 R11: ffffffff8ad3da14 R12: 1ffff920007c8df0
[  110.309371][ T2549] R13: 00000000000005dc R14: ffffc90003e47080 R15: ffff888005532f48
[  110.309816][ T2549] FS:  00007fc4146e9800(0000) GS:ffff8880dcc19000(0000) knlGS:0000000000000000
[  110.310352][ T2549] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  110.310728][ T2549] CR2: 00000000004e6e20 CR3: 000000000de58005 CR4: 0000000000772ef0
[  110.311178][ T2549] PKRU: 55555554
[  110.311411][ T2549] Call Trace:
[  110.311636][ T2549]  <TASK>
[ 110.311792][ T2549] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 110.312094][ T2549] ? __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) 
[ 110.312475][ T2549] ? br_del_if (net/bridge/br_if.c:742) 
[ 110.312709][ T2549] ? do_set_master (net/core/rtnetlink.c:2932) 
[ 110.313014][ T2549] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 110.313333][ T2549] ? netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 110.313634][ T2549] ? netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 110.313931][ T2549] ? netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 110.314248][ T2549] ? ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 110.314554][ T2549] ? ___sys_sendmsg (net/socket.c:2670) 
[ 110.314851][ T2549] ? __sys_sendmsg (net/socket.c:2700) 
[ 110.315145][ T2549] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 110.315454][ T2549] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 110.315831][ T2549] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 110.316140][ T2549] netif_set_mtu (net/core/dev.c:9652) 
[ 110.316452][ T2549] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 110.316766][ T2549] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 110.316993][ T2549] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 110.317293][ T2549] br_del_if (net/bridge/br_if.c:743) 
[ 110.317542][ T2549] ? rtnl_is_locked (net/core/rtnetlink.c:169) 
[ 110.317843][ T2549] do_set_master (net/core/rtnetlink.c:2932) 
[ 110.318142][ T2549] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 110.318471][ T2549] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 110.318775][ T2549] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 110.319155][ T2549] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 110.319463][ T2549] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 110.319762][ T2549] ? __kernel_text_address (kernel/extable.c:79) 
[ 110.320062][ T2549] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 110.320372][ T2549] ? __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) 
[ 110.320675][ T2549] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 110.321042][ T2549] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 110.321355][ T2549] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 110.321660][ T2549] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 110.321956][ T2549] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 110.322254][ T2549] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 110.322559][ T2549] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 110.322854][ T2549] ? __create_object (mm/kmemleak.c:771) 
[ 110.323167][ T2549] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 110.323477][ T2549] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 110.323778][ T2549] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 110.324145][ T2549] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 110.324462][ T2549] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 110.324769][ T2549] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 110.325068][ T2549] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 110.325385][ T2549] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 110.325684][ T2549] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 110.325979][ T2549] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 110.326277][ T2549] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 110.326578][ T2549] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 110.326879][ T2549] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 110.327178][ T2549] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 110.327493][ T2549] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 110.327789][ T2549] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 110.328085][ T2549] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 110.328403][ T2549] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 110.328704][ T2549] ? 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) 
[ 110.329005][ T2549] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 110.329327][ T2549] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 110.329623][ T2549] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 110.329932][ T2549] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 110.330250][ T2549] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 110.330552][ T2549] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 110.330854][ T2549] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 110.331152][ T2549] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 110.331453][ T2549] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 110.331831][ T2549] ___sys_sendmsg (net/socket.c:2670) 
[ 110.332124][ T2549] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 110.332435][ T2549] ? __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) 
[ 110.332803][ T2549] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 110.333111][ T2549] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 110.333461][ T2549] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 110.333762][ T2549] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 110.334100][ T2549] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 110.334409][ T2549] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 110.334718][ T2549] __sys_sendmsg (net/socket.c:2700) 
[ 110.335018][ T2549] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 110.335395][ T2549] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 110.335704][ T2549] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 110.336001][ T2549] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 110.336313][ T2549] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  110.336685][ T2549] RIP: 0033:0x7fc4148b61e7
[ 110.336994][ T2549] 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)
[  110.338060][ T2549] RSP: 002b:00007ffd970bd808 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  110.338516][ T2549] RAX: ffffffffffffffda RBX: 00007ffd970bdf30 RCX: 00007fc4148b61e7
[  110.338959][ T2549] RDX: 0000000000000000 RSI: 00007ffd970bd870 RDI: 0000000000000005
[  110.339417][ T2549] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[  110.339858][ T2549] R10: 00007fc4147b3ee8 R11: 0000000000000246 R12: 0000000000000003
[  110.340313][ T2549] R13: 00000000686e202b R14: 0000000000499600 R15: 0000000000000000
| [  111.085995][ T2557] ------------[ cut here ]------------
| [ 111.087414][ T2557] WARNING: CPU: 1 PID: 2557 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) 
| [  111.088010][ T2557] Modules linked in:
| [  111.088855][ T2557] Tainted: [W]=WARN
[  111.089081][ T2557] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 111.089477][ T2557] 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) 
[ 111.089784][ T2557] 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
[  111.090851][ T2557] RSP: 0018:ffffc90003e96f60 EFLAGS: 00010246
[  111.091225][ T2557] RAX: 0000000000000000 RBX: ffff888005532000 RCX: 0000000000000001
[  111.091674][ T2557] RDX: 0000000000000000 RSI: ffffffff8dd10759 RDI: ffffffff8d458280
[  111.092115][ T2557] RBP: ffffc90003e97050 R08: 0000000000000000 R09: 0000000000000000
[  111.092581][ T2557] R10: ffffc90003e97080 R11: ffffffff8e78d1e0 R12: 1ffff920007d2df0
[  111.093029][ T2557] R13: 00000000000005dc R14: ffffc90003e97080 R15: ffff888005532f48
[  111.093488][ T2557] FS:  00007fb27ccfc800(0000) GS:ffff8880dcc19000(0000) knlGS:0000000000000000
[  111.094012][ T2557] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  111.094397][ T2557] CR2: 00000000004e6e18 CR3: 000000001172c003 CR4: 0000000000772ef0
[  111.094843][ T2557] PKRU: 55555554
[  111.095067][ T2557] Call Trace:
[  111.095290][ T2557]  <TASK>
[ 111.095448][ T2557] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 111.095747][ T2557] ? __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) 
[ 111.096117][ T2557] ? br_del_if (net/bridge/br_if.c:742) 
[ 111.096354][ T2557] ? do_set_master (net/core/rtnetlink.c:2932) 
[ 111.096650][ T2557] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 111.096941][ T2557] ? netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 111.097237][ T2557] ? netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 111.097546][ T2557] ? netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 111.097840][ T2557] ? ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 111.098134][ T2557] ? ___sys_sendmsg (net/socket.c:2670) 
[ 111.098437][ T2557] ? __sys_sendmsg (net/socket.c:2700) 
[ 111.098737][ T2557] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 111.099033][ T2557] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 111.099406][ T2557] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 111.099718][ T2557] netif_set_mtu (net/core/dev.c:9652) 
[ 111.100017][ T2557] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 111.100339][ T2557] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 111.100564][ T2557] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 111.100859][ T2557] br_del_if (net/bridge/br_if.c:743) 
[ 111.101087][ T2557] ? rtnl_is_locked (net/core/rtnetlink.c:169) 
[ 111.101401][ T2557] do_set_master (net/core/rtnetlink.c:2932) 
[ 111.101700][ T2557] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 111.101999][ T2557] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 111.102310][ T2557] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 111.102687][ T2557] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 111.102989][ T2557] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 111.103292][ T2557] ? __kernel_text_address (kernel/extable.c:79) 
[ 111.103623][ T2557] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 111.103923][ T2557] ? __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) 
[ 111.104220][ T2557] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 111.104591][ T2557] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 111.104891][ T2557] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 111.105231][ T2557] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 111.105562][ T2557] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 111.105866][ T2557] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 111.106167][ T2557] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 111.106475][ T2557] ? __create_object (mm/kmemleak.c:771) 
[ 111.106774][ T2557] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 111.107069][ T2557] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 111.107378][ T2557] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 111.107752][ T2557] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 111.108055][ T2557] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 111.108368][ T2557] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 111.108664][ T2557] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 111.108965][ T2557] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 111.109258][ T2557] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 111.109573][ T2557] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 111.109871][ T2557] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 111.110170][ T2557] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 111.110477][ T2557] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 111.110778][ T2557] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 111.111080][ T2557] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 111.111384][ T2557] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 111.111683][ T2557] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 111.111990][ T2557] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 111.112291][ T2557] ? 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) 
[ 111.112596][ T2557] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 111.112897][ T2557] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 111.113201][ T2557] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 111.113524][ T2557] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 111.113823][ T2557] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 111.114118][ T2557] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 111.114432][ T2557] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 111.114737][ T2557] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 111.115029][ T2557] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 111.115417][ T2557] ___sys_sendmsg (net/socket.c:2670) 
[ 111.115711][ T2557] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 111.116005][ T2557] ? __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) 
[ 111.116383][ T2557] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 111.116689][ T2557] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 111.116991][ T2557] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 111.117291][ T2557] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 111.117609][ T2557] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 111.117907][ T2557] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 111.118209][ T2557] __sys_sendmsg (net/socket.c:2700) 
[ 111.118519][ T2557] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 111.118886][ T2557] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 111.119200][ T2557] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 111.119510][ T2557] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 111.119808][ T2557] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  111.120174][ T2557] RIP: 0033:0x7fb27cec91e7
[ 111.120488][ T2557] 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)
[  111.121569][ T2557] RSP: 002b:00007ffe11ff0f28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  111.122021][ T2557] RAX: ffffffffffffffda RBX: 00007ffe11ff1650 RCX: 00007fb27cec91e7
[  111.122470][ T2557] RDX: 0000000000000000 RSI: 00007ffe11ff0f90 RDI: 0000000000000005
[  111.122915][ T2557] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[  111.123388][ T2557] R10: 00007fb27cdc6ee8 R11: 0000000000000246 R12: 0000000000000003
[  111.123833][ T2557] R13: 00000000686e202c R14: 0000000000499600 R15: 0000000000000000
| [  111.751354][ T2565] ------------[ cut here ]------------
| [ 111.751707][ T2565] WARNING: CPU: 2 PID: 2565 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) 
| [  111.752324][ T2565] Modules linked in:
| [  111.753235][ T2565] Tainted: [W]=WARN
[  111.753505][ T2565] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 111.753901][ T2565] 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) 
[ 111.754222][ T2565] 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
[  111.755309][ T2565] RSP: 0018:ffffc90003e86f60 EFLAGS: 00010246
[  111.755710][ T2565] RAX: 0000000000000000 RBX: ffff888005532000 RCX: 0000000000000001
[  111.756161][ T2565] RDX: 0000000000000000 RSI: ffffffff8dd10759 RDI: ffffffff8d458280
[  111.756630][ T2565] RBP: ffffc90003e87050 R08: 0000000000000000 R09: 0000000000000000
[  111.757084][ T2565] R10: ffffc90003e87080 R11: ffffffff8e78d1e0 R12: 1ffff920007d0df0
[  111.757554][ T2565] R13: 00000000000005dc R14: ffffc90003e87080 R15: ffff888005532f48
[  111.758013][ T2565] FS:  00007f4dad9cd800(0000) GS:ffff8880dcc99000(0000) knlGS:0000000000000000
[  111.758553][ T2565] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  111.758937][ T2565] CR2: 000055cce9397dec CR3: 000000000fe67005 CR4: 0000000000772ef0
[  111.759413][ T2565] PKRU: 55555554
[  111.759667][ T2565] Call Trace:
[  111.759917][ T2565]  <TASK>
[ 111.760085][ T2565] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 111.760409][ T2565] ? __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) 
[ 111.760788][ T2565] ? br_del_if (net/bridge/br_if.c:742) 
[ 111.761025][ T2565] ? do_set_master (net/core/rtnetlink.c:2932) 
[ 111.761342][ T2565] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 111.761650][ T2565] ? netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 111.761964][ T2565] ? netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 111.762266][ T2565] ? netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 111.762587][ T2565] ? ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 111.762898][ T2565] ? ___sys_sendmsg (net/socket.c:2670) 
[ 111.763217][ T2565] ? __sys_sendmsg (net/socket.c:2700) 
[ 111.763536][ T2565] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 111.763852][ T2565] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 111.764234][ T2565] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 111.764577][ T2565] netif_set_mtu (net/core/dev.c:9652) 
[ 111.764885][ T2565] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 111.765210][ T2565] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 111.765459][ T2565] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 111.765771][ T2565] br_del_if (net/bridge/br_if.c:743) 
[ 111.766006][ T2565] ? rtnl_is_locked (net/core/rtnetlink.c:169) 
[ 111.766323][ T2565] do_set_master (net/core/rtnetlink.c:2932) 
[ 111.766633][ T2565] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 111.766957][ T2565] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 111.767269][ T2565] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 111.767673][ T2565] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 111.767984][ T2565] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 111.768291][ T2565] ? __kernel_text_address (kernel/extable.c:79) 
[ 111.768612][ T2565] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 111.768926][ T2565] ? __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) 
[ 111.769243][ T2565] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 111.769649][ T2565] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 111.769965][ T2565] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 111.770275][ T2565] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 111.770599][ T2565] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 111.770910][ T2565] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 111.771225][ T2565] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 111.771549][ T2565] ? __create_object (mm/kmemleak.c:771) 
[ 111.771864][ T2565] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 111.772176][ T2565] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 111.772503][ T2565] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 111.772884][ T2565] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 111.773218][ T2565] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 111.773548][ T2565] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 111.773860][ T2565] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 111.774182][ T2565] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 111.774508][ T2565] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 111.774812][ T2565] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 111.775127][ T2565] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 111.775444][ T2565] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 111.775759][ T2565] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 111.776071][ T2565] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 111.776396][ T2565] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 111.776712][ T2565] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 111.777025][ T2565] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 111.777357][ T2565] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 111.777678][ T2565] ? 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) 
[ 111.777990][ T2565] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 111.778314][ T2565] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 111.778634][ T2565] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 111.778955][ T2565] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 111.779268][ T2565] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 111.779590][ T2565] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 111.779909][ T2565] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 111.780249][ T2565] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 111.780592][ T2565] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 111.780988][ T2565] ___sys_sendmsg (net/socket.c:2670) 
[ 111.781314][ T2565] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 111.781622][ T2565] ? __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) 
[ 111.782003][ T2565] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 111.782333][ T2565] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 111.782648][ T2565] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 111.782969][ T2565] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 111.783285][ T2565] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 111.783613][ T2565] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 111.783929][ T2565] __sys_sendmsg (net/socket.c:2700) 
[ 111.784234][ T2565] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 111.784629][ T2565] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 111.784951][ T2565] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 111.785264][ T2565] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 111.785584][ T2565] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  111.785973][ T2565] RIP: 0033:0x7f4dadb9a1e7
[ 111.786294][ T2565] 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)
[  111.787381][ T2565] RSP: 002b:00007ffccd781958 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  111.787841][ T2565] RAX: ffffffffffffffda RBX: 00007ffccd782080 RCX: 00007f4dadb9a1e7
[  111.788316][ T2565] RDX: 0000000000000000 RSI: 00007ffccd7819c0 RDI: 0000000000000005
[  111.788773][ T2565] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[  111.789232][ T2565] R10: 00007f4dada97ee8 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