======================================
| [   19.621875][  T308] veth1: entered promiscuous mode
| [   19.623480][  T308] ------------[ cut here ]------------
| [ 19.623806][ T308] WARNING: CPU: 0 PID: 308 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) 
| [   19.624487][  T308] Modules linked in: bridge stp llc vrf veth
[   19.625757][  T308] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.626160][ T308] 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) 
[ 19.626502][ T308] 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
[   19.627642][  T308] RSP: 0018:ffffc90000546ef0 EFLAGS: 00010246
[   19.628045][  T308] RAX: 0000000000000000 RBX: ffff88800262a000 RCX: 0000000000000001
[   19.628530][  T308] RDX: 0000000000000000 RSI: ffffffffa2a9b941 RDI: ffffffffa22555e0
[   19.629008][  T308] RBP: ffffc90000546fe0 R08: 0000000000000000 R09: 0000000000000000
[   19.629490][  T308] R10: ffffc90000547010 R11: ffffffffa38a8918 R12: 1ffff920000a8de2
[   19.629966][  T308] R13: 00000000000005dc R14: ffffc90000547010 R15: ffff88800262af08
[   19.630475][  T308] FS:  00007f141763a800(0000) GS:ffff8880916b7000(0000) knlGS:0000000000000000
[   19.631038][  T308] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.631445][  T308] CR2: 00000000004e5aa8 CR3: 0000000014eb4003 CR4: 0000000000772ef0
[   19.631923][  T308] PKRU: 55555554
[   19.632164][  T308] Call Trace:
[   19.632410][  T308]  <TASK>
[ 19.632576][ T308] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.632895][ T308] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.633237][ T308] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 19.633572][ T308] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 19.633973][ T308] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.634298][ T308] netif_set_mtu (net/core/dev.c:9652) 
[ 19.634617][ T308] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.634953][ T308] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 19.635400][ T308] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.635646][ T308] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 19.636079][ T308] br_add_if (net/bridge/br_if.c:697) bridge 
[ 19.636452][ T308] do_set_master (net/core/rtnetlink.c:2948) 
[ 19.636778][ T308] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 19.637098][ T308] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 19.637503][ T308] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 19.637825][ T308] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 19.638138][ T308] ? __kernel_text_address (kernel/extable.c:79) 
[ 19.638476][ T308] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.638794][ T308] ? __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) 
[ 19.639111][ T308] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 19.639508][ T308] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.639825][ T308] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.640140][ T308] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 19.640467][ T308] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 19.640782][ T308] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.641099][ T308] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.641426][ T308] ? __create_object (mm/kmemleak.c:771) 
[ 19.641752][ T308] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 19.642068][ T308] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 19.642402][ T308] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 19.642792][ T308] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 19.643116][ T308] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.643445][ T308] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.643758][ T308] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.644090][ T308] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.644413][ T308] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.644723][ T308] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.645049][ T308] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.645372][ T308] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.645693][ T308] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.646012][ T308] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.646341][ T308] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.646665][ T308] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.646981][ T308] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.647316][ T308] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.647635][ T308] ? 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) 
[ 19.647954][ T308] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 19.648272][ T308] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.648596][ T308] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.648917][ T308] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.649738][ T308] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.650057][ T308] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.650627][ T308] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.651190][ T308] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.651514][ T308] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.651986][ T308] ___sys_sendmsg (net/socket.c:2670) 
[ 19.652537][ T308] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 19.652856][ T308] ? __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) 
[ 19.653248][ T308] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.653574][ T308] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.653902][ T308] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.654223][ T308] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.654778][ T308] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 19.655106][ T308] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.655438][ T308] __sys_sendmsg (net/socket.c:2700) 
[ 19.655748][ T308] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 19.656143][ T308] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.656484][ T308] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.656800][ T308] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.657120][ T308] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.657526][  T308] RIP: 0033:0x7f14178071e7
[ 19.657855][ T308] 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)
[   19.659475][  T308] RSP: 002b:00007fffdfea0aa8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.659956][  T308] RAX: ffffffffffffffda RBX: 00007fffdfea11d0 RCX: 00007f14178071e7
[   19.660908][  T308] RDX: 0000000000000000 RSI: 00007fffdfea0b10 RDI: 0000000000000005
[   19.661402][  T308] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   19.661892][  T308] R10: 00000000165f9910 R11: 0000000000000246 R12: 0000000000000004
[   19.662371][  T308] R13: 00000000686e49c4 R14: 0000000000499600 R15: 0000000000000000
| [   29.526150][  T360] ------------[ cut here ]------------
| [ 29.526860][ T360] WARNING: CPU: 3 PID: 360 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) 
| [   29.528452][  T360] Modules linked in: bridge stp llc vrf veth
| [   29.530545][  T360] Tainted: [W]=WARN
[   29.531021][  T360] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 29.531796][ T360] 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) 
[ 29.532517][ T360] 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
[   29.534860][  T360] RSP: 0018:ffffc900008e6f70 EFLAGS: 00010246
[   29.535346][  T360] RAX: 0000000000000000 RBX: ffff88800262a000 RCX: 0000000000000001
[   29.535962][  T360] RDX: 0000000000000000 RSI: ffffffffa2a9b941 RDI: ffffffffa22555e0
[   29.536495][  T360] RBP: ffffc900008e7058 R08: 0000000000000000 R09: 0000000000000000
[   29.537041][  T360] R10: ffffc900008e7088 R11: ffffffff9ee00130 R12: 1ffff9200011cdf2
[   29.537583][  T360] R13: 00000000000005dc R14: ffffc900008e7088 R15: ffff88800262af08
[   29.538125][  T360] FS:  00007f695cb94800(0000) GS:ffff888091837000(0000) knlGS:0000000000000000
[   29.538734][  T360] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   29.539182][  T360] CR2: 00007f9d0d12a658 CR3: 0000000014e38004 CR4: 0000000000772ef0
[   29.539696][  T360] PKRU: 55555554
[   29.539962][  T360] Call Trace:
[   29.540241][  T360]  <TASK>
[ 29.540468][ T360] ? __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) 
[ 29.540941][ T360] ? br_del_if (net/bridge/br_if.c:742) bridge 
[ 29.541458][ T360] ? do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2933) 
[ 29.541804][ T360] ? do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 29.542142][ T360] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 29.542523][ T360] ? netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 29.542884][ T360] ? netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 29.543226][ T360] ? ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 29.543637][ T360] ? ___sys_sendmsg (net/socket.c:2670) 
[ 29.544008][ T360] ? __sys_sendmsg (net/socket.c:2700) 
[ 29.544392][ T360] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 29.544839][ T360] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 29.545298][ T360] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 29.545682][ T360] netif_set_mtu (net/core/dev.c:9652) 
[ 29.546038][ T360] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 29.546503][ T360] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 29.546810][ T360] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 29.547309][ T360] br_del_if (net/bridge/br_if.c:743) bridge 
[ 29.547705][ T360] ? rtnl_is_locked (net/core/rtnetlink.c:169) 
[ 29.548035][ T360] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2933) 
[ 29.548453][ T360] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 29.548810][ T360] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 29.549310][ T360] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 29.549663][ T360] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 29.549999][ T360] ? __kernel_text_address (kernel/extable.c:79) 
[ 29.550379][ T360] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 29.550715][ T360] ? __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) 
[ 29.551094][ T360] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 29.551542][ T360] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 29.551886][ T360] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 29.552251][ T360] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 29.552653][ T360] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 29.553065][ T360] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 29.553444][ T360] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 29.553804][ T360] ? __create_object (mm/kmemleak.c:771) 
[ 29.554203][ T360] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 29.554545][ T360] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 29.554915][ T360] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 29.555404][ T360] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 29.555763][ T360] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 29.556143][ T360] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 29.556485][ T360] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 29.556890][ T360] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 29.557242][ T360] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 29.557595][ T360] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 29.557953][ T360] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 29.558382][ T360] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 29.558714][ T360] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 29.559082][ T360] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 29.559521][ T360] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 29.559904][ T360] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 29.560258][ T360] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 29.560681][ T360] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 29.561036][ T360] ? 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) 
[ 29.561401][ T360] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 29.561740][ T360] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 29.562076][ T360] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 29.562474][ T360] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 29.562822][ T360] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 29.563194][ T360] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 29.563544][ T360] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 29.563935][ T360] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 29.564327][ T360] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 29.564855][ T360] ___sys_sendmsg (net/socket.c:2670) 
[ 29.565223][ T360] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 29.565598][ T360] ? __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) 
[ 29.566057][ T360] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 29.566435][ T360] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 29.566847][ T360] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 29.567196][ T360] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 29.567538][ T360] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 29.567956][ T360] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 29.568339][ T360] __sys_sendmsg (net/socket.c:2700) 
[ 29.568732][ T360] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 29.569247][ T360] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 29.569626][ T360] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 29.570014][ T360] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 29.570470][ T360] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   29.570946][  T360] RIP: 0033:0x7f695cd611e7
[ 29.571308][ T360] 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)
[   29.572648][  T360] RSP: 002b:00007ffc183b1518 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   29.573214][  T360] RAX: ffffffffffffffda RBX: 00007ffc183b1c40 RCX: 00007f695cd611e7
[   29.573761][  T360] RDX: 0000000000000000 RSI: 00007ffc183b1580 RDI: 0000000000000005
[   29.574260][  T360] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   29.574775][  T360] R10: 00007f695cc5eee8 R11: 0000000000000246 R12: 0000000000000003
[   29.575320][  T360] R13: 00000000686e49ce R14: 0000000000499600 R15: 0000000000000000
| [   31.821218][  T362] ------------[ cut here ]------------
| [ 31.821606][ T362] WARNING: CPU: 2 PID: 362 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) 
| [   31.822296][  T362] Modules linked in: bridge stp llc vrf veth
| [   31.823437][  T362] Tainted: [W]=WARN
[   31.823700][  T362] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 31.824123][ T362] 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) 
[ 31.824488][ T362] 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
[   31.825693][  T362] RSP: 0018:ffffc90000906ef0 EFLAGS: 00010246
[   31.826105][  T362] RAX: 0000000000000000 RBX: ffff88800262a000 RCX: 0000000000000001
[   31.826600][  T362] RDX: 0000000000000000 RSI: ffffffffa2a9b941 RDI: ffffffffa22555e0
[   31.827078][  T362] RBP: ffffc90000906fe0 R08: 0000000000000000 R09: 0000000000000000
[   31.827573][  T362] R10: ffffc90000907010 R11: ffffffffa38a8918 R12: 1ffff92000120de2
[   31.828051][  T362] R13: 00000000000005dc R14: ffffc90000907010 R15: ffff88800262af08
[   31.828542][  T362] FS:  00007f79351ec800(0000) GS:ffff8880917b7000(0000) knlGS:0000000000000000
[   31.829103][  T362] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   31.829533][  T362] CR2: 00000000004e5aa8 CR3: 0000000014da8004 CR4: 0000000000772ef0
[   31.830028][  T362] PKRU: 55555554
[   31.830276][  T362] Call Trace:
[   31.830533][  T362]  <TASK>
[ 31.830713][ T362] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 31.831045][ T362] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 31.831395][ T362] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 31.831719][ T362] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 31.832129][ T362] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 31.832471][ T362] netif_set_mtu (net/core/dev.c:9652) 
[ 31.832800][ T362] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 31.833137][ T362] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 31.833612][ T362] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 31.833989][ T362] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 31.834478][ T362] br_add_if (net/bridge/br_if.c:697) bridge 
[ 31.835052][ T362] do_set_master (net/core/rtnetlink.c:2948) 
[ 31.835658][ T362] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 31.836178][ T362] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 31.836909][ T362] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 31.837525][ T362] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 31.838093][ T362] ? __kernel_text_address (kernel/extable.c:79) 
[ 31.838699][ T362] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 31.839312][ T362] ? __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) 
[ 31.839893][ T362] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 31.840531][ T362] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 31.840889][ T362] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 31.841219][ T362] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 31.841572][ T362] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 31.841916][ T362] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 31.842262][ T362] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 31.842600][ T362] ? __create_object (mm/kmemleak.c:771) 
[ 31.842943][ T362] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 31.843272][ T362] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 31.843621][ T362] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 31.844035][ T362] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 31.844383][ T362] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 31.844713][ T362] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 31.845256][ T362] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 31.845636][ T362] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 31.845984][ T362] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 31.846323][ T362] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 31.846655][ T362] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 31.847092][ T362] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 31.847442][ T362] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 31.847890][ T362] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 31.848230][ T362] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 31.848572][ T362] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 31.848920][ T362] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 31.849259][ T362] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 31.849609][ T362] ? 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) 
[ 31.850048][ T362] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 31.850667][ T362] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 31.851129][ T362] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 31.851478][ T362] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 31.851813][ T362] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 31.852155][ T362] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 31.852509][ T362] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 31.852858][ T362] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 31.853184][ T362] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 31.853720][ T362] ___sys_sendmsg (net/socket.c:2670) 
[ 31.854165][ T362] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 31.854800][ T362] ? __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) 
[ 31.855325][ T362] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 31.855669][ T362] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 31.856010][ T362] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 31.856355][ T362] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 31.856693][ T362] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 31.857021][ T362] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 31.857380][ T362] __sys_sendmsg (net/socket.c:2700) 
[ 31.857711][ T362] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 31.858117][ T362] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 31.858470][ T362] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 31.858804][ T362] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 31.859142][ T362] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   31.859557][  T362] RIP: 0033:0x7f79353b91e7
[ 31.859897][ T362] 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)
[   31.861040][  T362] RSP: 002b:00007ffee66c4c48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   31.861557][  T362] RAX: ffffffffffffffda RBX: 00007ffee66c5370 RCX: 00007f79353b91e7
[   31.862050][  T362] RDX: 0000000000000000 RSI: 00007ffee66c4cb0 RDI: 0000000000000005
[   31.862548][  T362] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   31.863035][  T362] R10: 000000001596e910 R11: 0000000000000246 R12: 0000000000000004
[   31.863540][  T362] R13: 00000000686e49d0 R14: 0000000000499600 R15: 0000000000000000
| [   53.400120][  T469] ------------[ cut here ]------------
| [ 53.400760][ T469] WARNING: CPU: 2 PID: 469 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) 
| [   53.401440][  T469] Modules linked in: bridge stp llc vrf veth
| [   53.402609][  T469] Tainted: [W]=WARN
[   53.402876][  T469] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 53.403316][ T469] 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) 
[ 53.403673][ T469] 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
[   53.404883][  T469] RSP: 0018:ffffc90000df6f70 EFLAGS: 00010246
[   53.405356][  T469] RAX: 0000000000000000 RBX: ffff88800262a000 RCX: 0000000000000001
[   53.405872][  T469] RDX: 0000000000000000 RSI: ffffffffa2a9b941 RDI: ffffffffa22555e0
[   53.406397][  T469] RBP: ffffc90000df7058 R08: 0000000000000000 R09: 0000000000000000
[   53.406903][  T469] R10: ffffc90000df7088 R11: ffffffffa2f79160 R12: 1ffff920001bedf2
[   53.407423][  T469] R13: 00000000000005dc R14: ffffc90000df7088 R15: ffff88800262af08
[   53.407929][  T469] FS:  00007f7dfb051800(0000) GS:ffff8880917b7000(0000) knlGS:0000000000000000
[   53.408535][  T469] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   53.408966][  T469] CR2: 00000000004e5aa8 CR3: 0000000004c46001 CR4: 0000000000772ef0
[   53.409491][  T469] PKRU: 55555554
[   53.409754][  T469] Call Trace:
[   53.410014][  T469]  <TASK>
[ 53.410194][ T469] ? __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) 
[ 53.410634][ T469] ? br_del_if (net/bridge/br_if.c:742) bridge 
[ 53.411030][ T469] ? do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2933) 
[ 53.411392][ T469] ? do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 53.411739][ T469] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 53.412083][ T469] ? netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 53.412442][ T469] ? netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 53.412787][ T469] ? ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 53.413128][ T469] ? ___sys_sendmsg (net/socket.c:2670) 
[ 53.413487][ T469] ? __sys_sendmsg (net/socket.c:2700) 
[ 53.413830][ T469] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 53.414173][ T469] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 53.414607][ T469] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 53.414988][ T469] netif_set_mtu (net/core/dev.c:9652) 
[ 53.415351][ T469] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 53.415718][ T469] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 53.415983][ T469] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 53.416466][ T469] br_del_if (net/bridge/br_if.c:743) bridge 
[ 53.416848][ T469] ? rtnl_is_locked (net/core/rtnetlink.c:169) 
[ 53.417195][ T469] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2933) 
[ 53.417575][ T469] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 53.417932][ T469] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 53.418391][ T469] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 53.418737][ T469] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 53.419082][ T469] ? __kernel_text_address (kernel/extable.c:79) 
[ 53.419446][ T469] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 53.419799][ T469] ? __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) 
[ 53.420151][ T469] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 53.420622][ T469] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 53.420980][ T469] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 53.421337][ T469] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 53.421686][ T469] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 53.422030][ T469] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 53.422387][ T469] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 53.422730][ T469] ? __create_object (mm/kmemleak.c:771) 
[ 53.423079][ T469] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 53.423446][ T469] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 53.423792][ T469] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 53.424214][ T469] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 53.424584][ T469] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 53.424945][ T469] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 53.425304][ T469] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 53.425657][ T469] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 53.426002][ T469] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 53.426362][ T469] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 53.426709][ T469] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 53.427053][ T469] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 53.427414][ T469] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 53.427762][ T469] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 53.428112][ T469] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 53.428467][ T469] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 53.428823][ T469] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 53.429179][ T469] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 53.429536][ T469] ? 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) 
[ 53.429911][ T469] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 53.430259][ T469] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 53.430622][ T469] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 53.430980][ T469] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 53.431344][ T469] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 53.431690][ T469] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 53.432041][ T469] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 53.432398][ T469] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 53.432768][ T469] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 53.433207][ T469] ___sys_sendmsg (net/socket.c:2670) 
[ 53.433562][ T469] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 53.433913][ T469] ? __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) 
[ 53.434344][ T469] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 53.434693][ T469] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 53.435062][ T469] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 53.435426][ T469] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 53.435773][ T469] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 53.436119][ T469] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 53.436485][ T469] __sys_sendmsg (net/socket.c:2700) 
[ 53.436832][ T469] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 53.437254][ T469] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 53.437625][ T469] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 53.437970][ T469] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 53.438324][ T469] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   53.438748][  T469] RIP: 0033:0x7f7dfb21e1e7
[ 53.439102][ T469] 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)
[   53.440312][  T469] RSP: 002b:00007ffdb95853d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   53.440821][  T469] RAX: ffffffffffffffda RBX: 00007ffdb9585b00 RCX: 00007f7dfb21e1e7
[   53.441337][  T469] RDX: 0000000000000000 RSI: 00007ffdb9585440 RDI: 0000000000000005
[   53.441860][  T469] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   53.442376][  T469] R10: 00007f7dfb11bee8 R11: 0000000000000246 R12: 0000000000000003
[   53.442884][  T469] R13: 00000000686e49e6 R14: 0000000000499600 R15: 0000000000000000
| [   55.765488][  T472] ------------[ cut here ]------------
| [ 55.765826][ T472] WARNING: CPU: 2 PID: 472 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) 
| [   55.766470][  T472] Modules linked in: bridge stp llc vrf veth
| [   55.767569][  T472] Tainted: [W]=WARN
[   55.767822][  T472] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 55.768313][ T472] 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) 
[ 55.768661][ T472] 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
[   55.769807][  T472] RSP: 0018:ffffc90000e26ef0 EFLAGS: 00010246
[   55.770220][  T472] RAX: 0000000000000000 RBX: ffff88800262a000 RCX: 0000000000000001
[   55.770723][  T472] RDX: 0000000000000000 RSI: ffffffffa2a9b941 RDI: ffffffffa22555e0
[   55.771211][  T472] RBP: ffffc90000e26fe0 R08: 0000000000000000 R09: 0000000000000000
[   55.771858][  T472] R10: ffffc90000e27010 R11: ffffffffa38a8918 R12: 1ffff920001c4de2
[   55.772481][  T472] R13: 00000000000005dc R14: ffffc90000e27010 R15: ffff88800262af08
[   55.772968][  T472] FS:  00007fc389de9800(0000) GS:ffff8880917b7000(0000) knlGS:0000000000000000
[   55.773537][  T472] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   55.773951][  T472] CR2: 00000000004e5aa8 CR3: 0000000014c99005 CR4: 0000000000772ef0
[   55.774449][  T472] PKRU: 55555554
[   55.774697][  T472] Call Trace:
[   55.774965][  T472]  <TASK>
[ 55.775142][ T472] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 55.775512][ T472] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 55.775851][ T472] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 55.776178][ T472] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 55.776595][ T472] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 55.776926][ T472] netif_set_mtu (net/core/dev.c:9652) 
[ 55.777253][ T472] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 55.777614][ T472] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 55.778070][ T472] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 55.778336][ T472] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 55.778784][ T472] br_add_if (net/bridge/br_if.c:697) bridge 
[ 55.779162][ T472] do_set_master (net/core/rtnetlink.c:2948) 
[ 55.779514][ T472] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 55.779859][ T472] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 55.780267][ T472] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 55.780604][ T472] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 55.780929][ T472] ? __kernel_text_address (kernel/extable.c:79) 
[ 55.781263][ T472] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 55.781606][ T472] ? __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) 
[ 55.781936][ T472] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 55.782384][ T472] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 55.782717][ T472] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 55.783044][ T472] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 55.783395][ T472] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 55.783730][ T472] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 55.784058][ T472] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 55.784393][ T472] ? __create_object (mm/kmemleak.c:771) 
[ 55.784723][ T472] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 55.785062][ T472] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 55.785403][ T472] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 55.785805][ T472] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 55.786141][ T472] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 55.786485][ T472] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 55.786814][ T472] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 55.787146][ T472] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 55.787495][ T472] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 55.787832][ T472] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 55.788162][ T472] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 55.788497][ T472] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 55.788825][ T472] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 55.789157][ T472] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 55.789499][ T472] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 55.789825][ T472] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 55.790160][ T472] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 55.790509][ T472] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 55.790835][ T472] ? 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) 
[ 55.791166][ T472] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 55.791539][ T472] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 55.791919][ T472] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 55.792257][ T472] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 55.792615][ T472] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 55.792946][ T472] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 55.793297][ T472] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 55.793632][ T472] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 55.793956][ T472] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 55.794383][ T472] ___sys_sendmsg (net/socket.c:2670) 
[ 55.794735][ T472] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 55.795091][ T472] ? __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) 
[ 55.795523][ T472] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 55.795858][ T472] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 55.796190][ T472] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 55.796536][ T472] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 55.796866][ T472] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 55.797191][ T472] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 55.797549][ T472] __sys_sendmsg (net/socket.c:2700) 
[ 55.797873][ T472] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 55.798275][ T472] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 55.798628][ T472] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 55.798961][ T472] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 55.799311][ T472] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   55.799817][  T472] RIP: 0033:0x7fc389fb61e7
[ 55.800158][ T472] 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)
[   55.801309][  T472] RSP: 002b:00007ffe98e76f98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   55.801822][  T472] RAX: ffffffffffffffda RBX: 00007ffe98e776c0 RCX: 00007fc389fb61e7
[   55.802327][  T472] RDX: 0000000000000000 RSI: 00007ffe98e77000 RDI: 0000000000000005
[   55.802810][  T472] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   55.803315][  T472] R10: 000000003d579910 R11: 0000000000000246 R12: 0000000000000004
[   55.803799][  T472] R13: 00000000686e49e8 R14: 0000000000499600 R15: 0000000000000000
| [   59.795979][  T514] ------------[ cut here ]------------
| [ 59.797485][ T514] WARNING: CPU: 3 PID: 514 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) 
| [   59.798633][  T514] Modules linked in: bridge stp llc vrf veth
| [   59.800585][  T514] Tainted: [W]=WARN
[   59.801015][  T514] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 59.801729][ T514] 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) 
[ 59.802324][ T514] 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
[   59.804282][  T514] RSP: 0018:ffffc90000fe6f70 EFLAGS: 00010246
[   59.805009][  T514] RAX: 0000000000000000 RBX: ffff88800262a000 RCX: 0000000000000001
[   59.805818][  T514] RDX: 0000000000000000 RSI: ffffffffa2a9b941 RDI: ffffffffa22555e0
[   59.806644][  T514] RBP: ffffc90000fe7058 R08: 0000000000000000 R09: 0000000000000000
[   59.807480][  T514] R10: ffffc90000fe7088 R11: ffffffffa2f79160 R12: 1ffff920001fcdf2
[   59.808324][  T514] R13: 00000000000005dc R14: ffffc90000fe7088 R15: ffff88800262af08
[   59.809140][  T514] FS:  00007f18be4ad800(0000) GS:ffff888091837000(0000) knlGS:0000000000000000
[   59.810092][  T514] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   59.810777][  T514] CR2: 00000000004e5aa8 CR3: 00000000096e8006 CR4: 0000000000772ef0
[   59.811601][  T514] PKRU: 55555554
[   59.812003][  T514] Call Trace:
[   59.812446][  T514]  <TASK>
[ 59.812727][ T514] ? __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) 
[ 59.813445][ T514] ? br_del_if (net/bridge/br_if.c:742) bridge 
[ 59.814068][ T514] ? do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2933) 
[ 59.814620][ T514] ? do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 59.815174][ T514] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 59.815720][ T514] ? netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 59.816258][ T514] ? netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 59.816819][ T514] ? ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 59.817368][ T514] ? ___sys_sendmsg (net/socket.c:2670) 
[ 59.817898][ T514] ? __sys_sendmsg (net/socket.c:2700) 
[ 59.818433][ T514] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 59.818974][ T514] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 59.819658][ T514] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 59.820214][ T514] netif_set_mtu (net/core/dev.c:9652) 
[ 59.820782][ T514] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 59.821385][ T514] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 59.821791][ T514] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 59.822526][ T514] br_del_if (net/bridge/br_if.c:743) bridge 
[ 59.823138][ T514] ? rtnl_is_locked (net/core/rtnetlink.c:169) 
[ 59.823721][ T514] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2933) 
[ 59.824325][ T514] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 59.824917][ T514] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 59.825615][ T514] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 59.826143][ T514] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 59.826709][ T514] ? __kernel_text_address (kernel/extable.c:79) 
[ 59.827247][ T514] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 59.827797][ T514] ? __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) 
[ 59.828364][ T514] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 59.829050][ T514] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 59.829607][ T514] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 59.830142][ T514] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 59.830685][ T514] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 59.831220][ T514] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 59.831760][ T514] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 59.832320][ T514] ? __create_object (mm/kmemleak.c:771) 
[ 59.832862][ T514] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 59.833419][ T514] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 59.833956][ T514] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 59.834657][ T514] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 59.835239][ T514] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 59.835753][ T514] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 59.836090][ T514] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 59.836450][ T514] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 59.836811][ T514] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 59.837138][ T514] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 59.837481][ T514] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 59.837825][ T514] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 59.838153][ T514] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 59.838496][ T514] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 59.838841][ T514] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 59.839175][ T514] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 59.839534][ T514] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 59.839892][ T514] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 59.840222][ T514] ? 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) 
[ 59.840575][ T514] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 59.840917][ T514] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 59.841246][ T514] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 59.841592][ T514] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 59.841948][ T514] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 59.842280][ T514] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 59.842643][ T514] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 59.842981][ T514] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 59.843320][ T514] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 59.843760][ T514] ___sys_sendmsg (net/socket.c:2670) 
[ 59.844088][ T514] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 59.844445][ T514] ? __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) 
[ 59.844889][ T514] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 59.845230][ T514] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 59.845575][ T514] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 59.845923][ T514] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 59.846255][ T514] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 59.846594][ T514] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 59.846956][ T514] __sys_sendmsg (net/socket.c:2700) 
[ 59.847297][ T514] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 59.847720][ T514] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 59.848066][ T514] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 59.848422][ T514] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 59.848783][ T514] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   59.849192][  T514] RIP: 0033:0x7f18be67a1e7
[ 59.849551][ T514] 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)
[   59.850756][  T514] RSP: 002b:00007ffeddd9dae8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   59.851254][  T514] RAX: ffffffffffffffda RBX: 00007ffeddd9e210 RCX: 00007f18be67a1e7
[   59.851775][  T514] RDX: 0000000000000000 RSI: 00007ffeddd9db50 RDI: 0000000000000005
[   59.852268][  T514] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   59.852793][  T514] R10: 00007f18be577ee8 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