======================================
| [   19.879364][  T305] veth1: entered promiscuous mode
| [   19.898179][  T305] ------------[ cut here ]------------
| [ 19.898660][ T305] WARNING: CPU: 2 PID: 305 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   19.899293][  T305] Modules linked in: bridge stp llc 8021q vrf veth
[   19.900362][  T305] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.900773][ T305] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 19.901111][ T305] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 1a 63 7b 00       	call   0x7b633b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   19.902240][  T305] RSP: 0018:ffffc90000616ef0 EFLAGS: 00010246
[   19.902657][  T305] RAX: 0000000000000000 RBX: ffff88800c952000 RCX: 0000000000000001
[   19.903131][  T305] RDX: 0000000000000000 RSI: ffffffffb189b941 RDI: ffffffffb10555e0
[   19.903641][  T305] RBP: ffffc90000616fe0 R08: 0000000000000000 R09: 0000000000000000
[   19.904119][  T305] R10: ffffc90000617010 R11: ffffffffb26a8918 R12: 1ffff920000c2de2
[   19.904601][  T305] R13: 00000000000005dc R14: ffffc90000617010 R15: ffff88800c952f08
[   19.905295][  T305] FS:  00007f7736d20800(0000) GS:ffff88807bbb7000(0000) knlGS:0000000000000000
[   19.905870][  T305] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.906383][  T305] CR2: 00000000004e5aa8 CR3: 000000000baa9001 CR4: 0000000000772ef0
[   19.906871][  T305] PKRU: 55555554
[   19.907121][  T305] Call Trace:
[   19.907365][  T305]  <TASK>
[ 19.907549][ T305] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.907875][ T305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.908203][ T305] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 19.908541][ T305] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 19.908940][ T305] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.909265][ T305] netif_set_mtu (net/core/dev.c:9652) 
[ 19.909598][ T305] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.909928][ T305] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 19.910372][ T305] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.910635][ T305] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 19.911068][ T305] br_add_if (net/bridge/br_if.c:697) bridge 
[ 19.911450][ T305] do_set_master (net/core/rtnetlink.c:2948) 
[ 19.911776][ T305] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 19.912100][ T305] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 19.912514][ T305] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 19.912835][ T305] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 19.913155][ T305] ? __kernel_text_address (kernel/extable.c:79) 
[ 19.913507][ T305] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.913833][ T305] ? __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) 
[ 19.914161][ T305] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 19.914565][ T305] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.914888][ T305] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.915207][ T305] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 19.915664][ T305] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 19.915987][ T305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.916308][ T305] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.916632][ T305] ? __create_object (mm/kmemleak.c:771) 
[ 19.916952][ T305] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 19.917281][ T305] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 19.917611][ T305] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 19.918009][ T305] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 19.918363][ T305] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.918704][ T305] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.919026][ T305] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.919352][ T305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.919682][ T305] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.920000][ T305] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.920325][ T305] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.920654][ T305] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.920979][ T305] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.921304][ T305] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.921641][ T305] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.921971][ T305] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.922294][ T305] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.922640][ T305] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.922959][ T305] ? 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) 
[ 19.923300][ T305] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 19.923635][ T305] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.923957][ T305] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.924281][ T305] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.924616][ T305] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.924937][ T305] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.925269][ T305] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.925611][ T305] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.925935][ T305] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.926343][ T305] ___sys_sendmsg (net/socket.c:2670) 
[ 19.926677][ T305] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 19.926998][ T305] ? __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) 
[ 19.927408][ T305] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.927744][ T305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.928069][ T305] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.928415][ T305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.928740][ T305] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 19.929061][ T305] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.929390][ T305] __sys_sendmsg (net/socket.c:2700) 
[ 19.929719][ T305] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 19.930122][ T305] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.930462][ T305] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.930789][ T305] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.931114][ T305] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.931519][  T305] RIP: 0033:0x7f7736eed1e7
[ 19.931853][ T305] 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)
[   19.932979][  T305] RSP: 002b:00007ffcd1566788 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.933483][  T305] RAX: ffffffffffffffda RBX: 00007ffcd1566eb0 RCX: 00007f7736eed1e7
[   19.934243][  T305] RDX: 0000000000000000 RSI: 00007ffcd15667f0 RDI: 0000000000000005
[   19.934730][  T305] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   19.935208][  T305] R10: 0000000035872910 R11: 0000000000000246 R12: 0000000000000004
[   19.935695][  T305] R13: 00000000686e3bb1 R14: 0000000000499600 R15: 0000000000000000
| [   20.079670][  T306] ------------[ cut here ]------------
| [ 20.080048][ T306] WARNING: CPU: 2 PID: 306 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   20.080714][  T306] Modules linked in: bridge stp llc 8021q vrf veth
| [   20.082629][  T306] Tainted: [W]=WARN
[   20.082921][  T306] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.083353][ T306] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 20.083726][ T306] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 1a 63 7b 00       	call   0x7b633b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   20.084894][  T306] RSP: 0018:ffffc90000b16ef0 EFLAGS: 00010246
[   20.085319][  T306] RAX: 0000000000000000 RBX: ffff88800c952000 RCX: 0000000000000001
[   20.085841][  T306] RDX: 0000000000000000 RSI: ffffffffb189b941 RDI: ffffffffb10555e0
[   20.086344][  T306] RBP: ffffc90000b16fe0 R08: 0000000000000000 R09: 0000000000000000
[   20.086849][  T306] R10: ffffc90000b17010 R11: ffffffffb26a8918 R12: 1ffff92000162de2
[   20.087381][  T306] R13: 00000000000005dc R14: ffffc90000b17010 R15: ffff88800c952f08
[   20.087889][  T306] FS:  00007f171973b800(0000) GS:ffff88807bbb7000(0000) knlGS:0000000000000000
[   20.088477][  T306] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.088896][  T306] CR2: 00000000004e5ab0 CR3: 000000000aa32002 CR4: 0000000000772ef0
[   20.089396][  T306] PKRU: 55555554
[   20.089676][  T306] Call Trace:
[   20.089929][  T306]  <TASK>
[ 20.090107][ T306] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 20.090454][ T306] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.090800][ T306] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 20.091139][ T306] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 20.091571][ T306] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 20.091908][ T306] netif_set_mtu (net/core/dev.c:9652) 
[ 20.092247][ T306] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 20.092605][ T306] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 20.093069][ T306] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 20.093344][ T306] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 20.093833][ T306] br_add_if (net/bridge/br_if.c:697) bridge 
[ 20.094219][ T306] do_set_master (net/core/rtnetlink.c:2948) 
[ 20.094581][ T306] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 20.094923][ T306] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 20.095343][ T306] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 20.095690][ T306] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 20.096040][ T306] ? __kernel_text_address (kernel/extable.c:79) 
[ 20.096394][ T306] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.096747][ T306] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113) 
[ 20.097086][ T306] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 20.097519][ T306] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.097857][ T306] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.098187][ T306] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 20.098548][ T306] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 20.098900][ T306] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.099242][ T306] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 20.099590][ T306] ? __create_object (mm/kmemleak.c:771) 
[ 20.099935][ T306] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 20.100269][ T306] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 20.100613][ T306] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 20.101021][ T306] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 20.101362][ T306] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 20.101723][ T306] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.102057][ T306] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.102413][ T306] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.102745][ T306] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 20.103077][ T306] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.103446][ T306] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.103781][ T306] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 20.104145][ T306] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.104499][ T306] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.104842][ T306] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 20.105173][ T306] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.105530][ T306] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 20.105880][ T306] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 20.106217][ T306] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 20.106564][ T306] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 20.106906][ T306] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 20.107240][ T306] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.107597][ T306] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 20.107934][ T306] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 20.108268][ T306] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 20.108620][ T306] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 20.108960][ T306] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 20.109292][ T306] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 20.109740][ T306] ___sys_sendmsg (net/socket.c:2670) 
[ 20.110075][ T306] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 20.110422][ T306] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3096) 
[ 20.110839][ T306] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 20.111179][ T306] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.111527][ T306] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.111870][ T306] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.112201][ T306] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 20.112551][ T306] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.112894][ T306] __sys_sendmsg (net/socket.c:2700) 
[ 20.113223][ T306] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 20.113670][ T306] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 20.114021][ T306] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.114358][ T306] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.114740][ T306] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.115158][  T306] RIP: 0033:0x7f17199081e7
[ 20.115516][ T306] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   20.116678][  T306] RSP: 002b:00007ffe77df9528 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.117177][  T306] RAX: ffffffffffffffda RBX: 00007ffe77df9c50 RCX: 00007f17199081e7
[   20.117699][  T306] RDX: 0000000000000000 RSI: 00007ffe77df9590 RDI: 0000000000000005
[   20.118199][  T306] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   20.118705][  T306] R10: 00000000323c7910 R11: 0000000000000246 R12: 0000000000000004
[   20.119200][  T306] R13: 00000000686e3bb1 R14: 0000000000499600 R15: 0000000000000000
| [   84.308312][  T594] ------------[ cut here ]------------
| [ 84.308686][ T594] WARNING: CPU: 2 PID: 594 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) 
| [   84.309325][  T594] Modules linked in: act_gact cls_flower sch_ingress bridge stp llc 8021q vrf veth
| [   84.311503][  T594] Tainted: [W]=WARN
[   84.311755][  T594] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 84.312153][ T594] 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) 
[ 84.312507][ T594] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 1a 63 7b 00       	call   0x7b633b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   84.313672][  T594] RSP: 0018:ffffc9000105eef0 EFLAGS: 00010246
[   84.314100][  T594] RAX: 0000000000000000 RBX: ffff888005162000 RCX: 0000000000000001
[   84.314609][  T594] RDX: 0000000000000000 RSI: ffffffffb189b941 RDI: ffffffffb10555e0
[   84.315093][  T594] RBP: ffffc9000105efe0 R08: 0000000000000000 R09: 0000000000000000
[   84.315574][  T594] R10: ffffc9000105f010 R11: ffffffffb26a8918 R12: 1ffff9200020bde2
[   84.316050][  T594] R13: 00000000000005dc R14: ffffc9000105f010 R15: ffff888005162f08
[   84.316540][  T594] FS:  00007f9886698800(0000) GS:ffff88807bbb7000(0000) knlGS:0000000000000000
[   84.317097][  T594] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   84.317509][  T594] CR2: 00000000004e5aa0 CR3: 0000000004e57006 CR4: 0000000000772ef0
[   84.317985][  T594] PKRU: 55555554
[   84.318235][  T594] Call Trace:
[   84.318493][  T594]  <TASK>
[ 84.318677][ T594] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 84.319003][ T594] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 84.319334][ T594] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 84.319671][ T594] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 84.320071][ T594] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 84.320397][ T594] netif_set_mtu (net/core/dev.c:9652) 
[ 84.320729][ T594] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 84.321068][ T594] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 84.321532][ T594] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 84.321782][ T594] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 84.322216][ T594] br_add_if (net/bridge/br_if.c:697) bridge 
[ 84.322596][ T594] ? cycle_netdev (drivers/net/vrf.c:1055) vrf 
[ 84.322929][ T594] do_set_master (net/core/rtnetlink.c:2948) 
[ 84.323260][ T594] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 84.323616][ T594] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 84.324035][ T594] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 84.324360][ T594] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 84.324693][ T594] ? __kernel_text_address (kernel/extable.c:79) 
[ 84.325020][ T594] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 84.325356][ T594] ? __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) 
[ 84.325696][ T594] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 84.326102][ T594] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 84.326473][ T594] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 84.326797][ T594] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 84.327116][ T594] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 84.327459][ T594] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 84.327791][ T594] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 84.328111][ T594] ? __create_object (mm/kmemleak.c:771) 
[ 84.328451][ T594] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 84.328773][ T594] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 84.329095][ T594] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 84.329503][ T594] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 84.329831][ T594] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 84.330155][ T594] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 84.330480][ T594] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 84.330817][ T594] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 84.331144][ T594] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 84.331476][ T594] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 84.331803][ T594] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 84.332123][ T594] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 84.332456][ T594] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 84.332779][ T594] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 84.333115][ T594] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 84.333467][ T594] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 84.333817][ T594] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 84.334159][ T594] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 84.334498][ T594] ? 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) 
[ 84.334827][ T594] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 84.335160][ T594] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 84.335511][ T594] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 84.335842][ T594] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 84.336166][ T594] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 84.336525][ T594] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 84.336857][ T594] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 84.337189][ T594] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 84.337528][ T594] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 84.337956][ T594] ___sys_sendmsg (net/socket.c:2670) 
[ 84.338288][ T594] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 84.338625][ T594] ? __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) 
[ 84.339026][ T594] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 84.339358][ T594] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 84.339707][ T594] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 84.340038][ T594] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 84.340361][ T594] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 84.340696][ T594] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 84.341041][ T594] __sys_sendmsg (net/socket.c:2700) 
[ 84.341366][ T594] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 84.341774][ T594] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 84.342132][ T594] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 84.342472][ T594] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 84.342808][ T594] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   84.343215][  T594] RIP: 0033:0x7f98868651e7
[ 84.343580][ T594] 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)
[   84.344691][  T594] RSP: 002b:00007ffe3b821b88 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   84.345175][  T594] RAX: ffffffffffffffda RBX: 00007ffe3b8222b0 RCX: 00007f98868651e7
[   84.345667][  T594] RDX: 0000000000000000 RSI: 00007ffe3b821bf0 RDI: 0000000000000005
[   84.346145][  T594] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   84.346720][  T594] R10: 000000000d602910 R11: 0000000000000246 R12: 0000000000000004


Finger prints:
netif_set_mtu_ext:netif_set_mtu:dev_set_mtu:br_mtu_auto_adjust:br_add_if