======================================
| [   20.650258][  T321] veth1: entered promiscuous mode
| [   20.652672][  T321] ------------[ cut here ]------------
| [ 20.652992][ T321] WARNING: CPU: 3 PID: 321 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) 
| [   20.653826][  T321] Modules linked in: bridge stp llc vrf veth
[   20.654861][  T321] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.655273][ T321] 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) 
[ 20.655630][ T321] 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
[   20.657000][  T321] RSP: 0018:ffffc90000696ef0 EFLAGS: 00010246
[   20.657422][  T321] RAX: 0000000000000000 RBX: ffff88800aaf2000 RCX: 0000000000000001
[   20.657898][  T321] RDX: 0000000000000000 RSI: ffffffff88e9b941 RDI: ffffffff886555e0
[   20.658360][  T321] RBP: ffffc90000696fe0 R08: 0000000000000000 R09: 0000000000000000
[   20.658851][  T321] R10: ffffc90000697010 R11: ffffffff89ca8918 R12: 1ffff920000d2de2
[   20.659316][  T321] R13: 00000000000005dc R14: ffffc90000697010 R15: ffff88800aaf2f08
[   20.659788][  T321] FS:  00007fc35b624800(0000) GS:ffff8880ab437000(0000) knlGS:0000000000000000
[   20.660336][  T321] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.660758][  T321] CR2: 00000000004e5aa8 CR3: 000000000a4f0004 CR4: 0000000000772ef0
[   20.661237][  T321] PKRU: 55555554
[   20.661516][  T321] Call Trace:
[   20.661761][  T321]  <TASK>
[ 20.661925][ T321] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 20.662240][ T321] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.662594][ T321] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 20.662919][ T321] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 20.663337][ T321] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 20.663662][ T321] netif_set_mtu (net/core/dev.c:9652) 
[ 20.663978][ T321] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 20.664296][ T321] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 20.664763][ T321] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 20.665004][ T321] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 20.665456][ T321] br_add_if (net/bridge/br_if.c:697) bridge 
[ 20.665815][ T321] do_set_master (net/core/rtnetlink.c:2948) 
[ 20.666154][ T321] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 20.666483][ T321] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 20.666886][ T321] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 20.667193][ T321] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 20.667514][ T321] ? __kernel_text_address (kernel/extable.c:79) 
[ 20.667831][ T321] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.668145][ T321] ? __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) 
[ 20.668469][ T321] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 20.668874][ T321] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.669207][ T321] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.669524][ T321] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 20.669867][ T321] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 20.670216][ T321] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.670546][ T321] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 20.670854][ T321] ? __create_object (mm/kmemleak.c:771) 
[ 20.671189][ T321] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 20.671512][ T321] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 20.671821][ T321] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 20.672228][ T321] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 20.672584][ T321] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 20.672907][ T321] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.673235][ T321] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.673562][ T321] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.673871][ T321] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 20.674191][ T321] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.674515][ T321] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.674843][ T321] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 20.675151][ T321] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.675501][ T321] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.675816][ T321] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 20.676125][ T321] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.676443][ T321] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 20.676765][ T321] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 20.677081][ T321] ? 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) 
[ 20.677395][ T321] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 20.677719][ T321] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 20.678027][ T321] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.678341][ T321] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 20.678681][ T321] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 20.678992][ T321] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 20.679308][ T321] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 20.679633][ T321] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 20.679954][ T321] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 20.680352][ T321] ___sys_sendmsg (net/socket.c:2670) 
[ 20.680689][ T321] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 20.681000][ T321] ? __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) 
[ 20.681391][ T321] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 20.681713][ T321] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.682033][ T321] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.682347][ T321] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.682671][ T321] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 20.682979][ T321] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.683292][ T321] __sys_sendmsg (net/socket.c:2700) 
[ 20.683606][ T321] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 20.683989][ T321] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 20.684314][ T321] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.684635][ T321] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.684948][ T321] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.685330][  T321] RIP: 0033:0x7fc35b7f11e7
[ 20.685665][ T321] 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)
[   20.686816][  T321] RSP: 002b:00007ffe910dc348 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.687309][  T321] RAX: ffffffffffffffda RBX: 00007ffe910dca70 RCX: 00007fc35b7f11e7
[   20.687797][  T321] RDX: 0000000000000000 RSI: 00007ffe910dc3b0 RDI: 0000000000000005
[   20.688550][  T321] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   20.689014][  T321] R10: 00000000130fb910 R11: 0000000000000246 R12: 0000000000000004
[   20.689485][  T321] R13: 00000000686e2182 R14: 0000000000499600 R15: 0000000000000000
| [   20.806330][  T323] ------------[ cut here ]------------
| [ 20.807390][ T323] WARNING: CPU: 2 PID: 323 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) 
| [   20.808078][  T323] Modules linked in: bridge stp llc vrf veth
| [   20.809162][  T323] Tainted: [W]=WARN
[   20.809428][  T323] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.809823][ T323] 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) 
[ 20.810173][ T323] 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
[   20.811288][  T323] RSP: 0018:ffffc90000646ef0 EFLAGS: 00010246
[   20.811699][  T323] RAX: 0000000000000000 RBX: ffff88800aaf2000 RCX: 0000000000000001
[   20.812213][  T323] RDX: 0000000000000000 RSI: ffffffff88e9b941 RDI: ffffffff886555e0
[   20.812704][  T323] RBP: ffffc90000646fe0 R08: 0000000000000000 R09: 0000000000000000
[   20.813180][  T323] R10: ffffc90000647010 R11: ffffffff89ca8918 R12: 1ffff920000c8de2
[   20.813666][  T323] R13: 00000000000005dc R14: ffffc90000647010 R15: ffff88800aaf2f08
[   20.814159][  T323] FS:  00007fbe41e40800(0000) GS:ffff8880ab3b7000(0000) knlGS:0000000000000000
[   20.814721][  T323] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.815121][  T323] CR2: 00000000004e5ab0 CR3: 000000000f355002 CR4: 0000000000772ef0
[   20.815655][  T323] PKRU: 55555554
[   20.815935][  T323] Call Trace:
[   20.816186][  T323]  <TASK>
[ 20.816361][ T323] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 20.816697][ T323] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.817028][ T323] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 20.817347][ T323] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 20.817767][ T323] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 20.818105][ T323] netif_set_mtu (net/core/dev.c:9652) 
[ 20.818439][ T323] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 20.818769][ T323] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 20.819213][ T323] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 20.819469][ T323] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 20.819963][ T323] br_add_if (net/bridge/br_if.c:697) bridge 
[ 20.820351][ T323] do_set_master (net/core/rtnetlink.c:2948) 
[ 20.820694][ T323] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 20.821018][ T323] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 20.821433][ T323] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 20.821759][ T323] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 20.822082][ T323] ? __kernel_text_address (kernel/extable.c:79) 
[ 20.822403][ T323] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.822745][ T323] ? __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) 
[ 20.823068][ T323] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 20.823470][ T323] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.823791][ T323] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.824154][ T323] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 20.824484][ T323] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 20.824817][ T323] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.825148][ T323] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 20.825478][ T323] ? __create_object (mm/kmemleak.c:771) 
[ 20.825801][ T323] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 20.826120][ T323] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 20.826461][ T323] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 20.826858][ T323] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 20.827181][ T323] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 20.827539][ T323] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.827882][ T323] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.828234][ T323] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.828568][ T323] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 20.828891][ T323] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.829214][ T323] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.829543][ T323] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 20.829876][ T323] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.830212][ T323] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.830543][ T323] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 20.830884][ T323] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.831207][ T323] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 20.831585][ T323] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 20.831950][ T323] ? 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) 
[ 20.832278][ T323] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 20.832631][ T323] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 20.832965][ T323] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.833291][ T323] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 20.833619][ T323] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 20.833942][ T323] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 20.834269][ T323] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 20.834602][ T323] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 20.834944][ T323] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 20.835359][ T323] ___sys_sendmsg (net/socket.c:2670) 
[ 20.835685][ T323] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 20.836057][ T323] ? __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) 
[ 20.836468][ T323] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 20.836795][ T323] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.837117][ T323] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.837455][ T323] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.837782][ T323] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 20.838104][ T323] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.838442][ T323] __sys_sendmsg (net/socket.c:2700) 
[ 20.838763][ T323] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 20.839177][ T323] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 20.839522][ T323] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.839866][ T323] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.840240][ T323] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.840647][  T323] RIP: 0033:0x7fbe4200d1e7
[ 20.840983][ T323] 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)
[   20.842147][  T323] RSP: 002b:00007ffe0823f888 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.842651][  T323] RAX: ffffffffffffffda RBX: 00007ffe0823ffb0 RCX: 00007fbe4200d1e7
[   20.843130][  T323] RDX: 0000000000000000 RSI: 00007ffe0823f8f0 RDI: 0000000000000005
[   20.843619][  T323] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   20.844136][  T323] R10: 00000000049fe910 R11: 0000000000000246 R12: 0000000000000004
[   20.844626][  T323] R13: 00000000686e2182 R14: 0000000000499600 R15: 0000000000000000
| [   20.990100][  T324] ------------[ cut here ]------------
| [ 20.990446][ T324] WARNING: CPU: 0 PID: 324 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) 
| [   20.991103][  T324] Modules linked in: bridge stp llc vrf veth
| [   20.992302][  T324] Tainted: [W]=WARN
[   20.992966][  T324] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.993365][ T324] 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) 
[ 20.993705][ T324] 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
[   20.994854][  T324] RSP: 0018:ffffc900007b6ef0 EFLAGS: 00010246
[   20.995256][  T324] RAX: 0000000000000000 RBX: ffff88800aaf2000 RCX: 0000000000000001
[   20.995727][  T324] RDX: 0000000000000000 RSI: ffffffff88e9b941 RDI: ffffffff886555e0
[   20.996200][  T324] RBP: ffffc900007b6fe0 R08: 0000000000000000 R09: 0000000000000000
[   20.996688][  T324] R10: ffffc900007b7010 R11: ffffffff89ca8918 R12: 1ffff920000f6de2
[   20.997154][  T324] R13: 00000000000005dc R14: ffffc900007b7010 R15: ffff88800aaf2f08
[   20.997637][  T324] FS:  00007fd384b64800(0000) GS:ffff8880ab2b7000(0000) knlGS:0000000000000000
[   20.998181][  T324] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.998585][  T324] CR2: 00000000004e5ac0 CR3: 000000000bfb5005 CR4: 0000000000772ef0
[   20.999049][  T324] PKRU: 55555554
[   20.999361][  T324] Call Trace:
[   20.999668][  T324]  <TASK>
[ 20.999830][ T324] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 21.000150][ T324] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 21.000502][ T324] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 21.000810][ T324] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 21.001190][ T324] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 21.001514][ T324] netif_set_mtu (net/core/dev.c:9652) 
[ 21.001822][ T324] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 21.002139][ T324] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 21.002579][ T324] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 21.002814][ T324] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 21.003234][ T324] br_add_if (net/bridge/br_if.c:697) bridge 
[ 21.003597][ T324] do_set_master (net/core/rtnetlink.c:2948) 
[ 21.003918][ T324] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 21.004242][ T324] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 21.004657][ T324] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 21.004964][ T324] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 21.005269][ T324] ? __kernel_text_address (kernel/extable.c:79) 
[ 21.005597][ T324] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 21.005910][ T324] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113) 
[ 21.006220][ T324] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 21.006615][ T324] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 21.006922][ T324] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 21.007223][ T324] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 21.007536][ T324] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 21.007841][ T324] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 21.008142][ T324] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 21.008469][ T324] ? __create_object (mm/kmemleak.c:771) 
[ 21.008779][ T324] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 21.009083][ T324] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 21.009389][ T324] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 21.009784][ T324] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 21.010107][ T324] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 21.010436][ T324] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 21.010742][ T324] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 21.011059][ T324] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 21.011364][ T324] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 21.011681][ T324] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 21.011988][ T324] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 21.012306][ T324] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 21.012644][ T324] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 21.012953][ T324] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 21.013272][ T324] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 21.013590][ T324] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 21.013901][ T324] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 21.014218][ T324] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 21.014533][ T324] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 21.014841][ T324] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 21.015153][ T324] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 21.015473][ T324] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 21.015784][ T324] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 21.016094][ T324] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 21.016400][ T324] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 21.016747][ T324] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 21.017057][ T324] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 21.017362][ T324] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 21.017800][ T324] ___sys_sendmsg (net/socket.c:2670) 
[ 21.018123][ T324] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 21.018460][ T324] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3096) 
[ 21.018868][ T324] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 21.019194][ T324] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 21.019524][ T324] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 21.019835][ T324] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 21.020159][ T324] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 21.020499][ T324] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 21.020814][ T324] __sys_sendmsg (net/socket.c:2700) 
[ 21.021120][ T324] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 21.021529][ T324] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 21.021846][ T324] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 21.022153][ T324] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 21.022476][ T324] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   21.022865][  T324] RIP: 0033:0x7fd384d311e7
[ 21.023182][ T324] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   21.024302][  T324] RSP: 002b:00007ffee89fad78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   21.024802][  T324] RAX: ffffffffffffffda RBX: 00007ffee89fb4a0 RCX: 00007fd384d311e7
[   21.025260][  T324] RDX: 0000000000000000 RSI: 00007ffee89fade0 RDI: 0000000000000005
[   21.025731][  T324] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   21.026187][  T324] R10: 000000001d93e910 R11: 0000000000000246 R12: 0000000000000004


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