======================================
| [  745.900262][    C0] rcu_scheduler_active = 2, debug_locks = 1
| [  745.900713][    C0] no locks held by swapper/0/0.
| [  745.901030][    C0]
| [  745.901030][    C0] stack backtrace:
[  745.901419][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  745.901421][    C0] Call Trace:
[  745.901423][    C0]  <IRQ>
[ 745.901426][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 745.901438][ C0] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6866) 
[ 745.901450][ C0] veth_xdp_rcv (drivers/net/veth.c:907 (discriminator 9)) 
[ 745.901457][ C0] ? clockevents_program_event (kernel/time/clockevents.c:326) 
[ 745.901467][ C0] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 745.901474][ C0] ? __pfx_veth_xdp_rcv (drivers/net/veth.c:899) 
[ 745.901478][ C0] ? mark_held_locks (kernel/locking/lockdep.c:4326) 
[ 745.901483][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 745.901490][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 745.901494][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 745.901499][ C0] ? napi_complete_done (./include/linux/hrtimer.h:264 net/core/dev.c:6581) 
[ 745.901507][ C0] ? __pfx_napi_complete_done (net/core/dev.c:6517) 
[ 745.901510][ C0] ? __lock_acquire (kernel/locking/lockdep.c:5235) 
[ 745.901518][ C0] veth_poll (drivers/net/veth.c:977) 
[ 745.901523][ C0] ? __pfx_veth_poll (drivers/net/veth.c:965) 
[ 745.901526][ C0] ? validate_chain (kernel/locking/lockdep.c:3802 kernel/locking/lockdep.c:3822 kernel/locking/lockdep.c:3877) 
[ 745.901534][ C0] ? __lock_acquire (kernel/locking/lockdep.c:5235) 
[ 745.901547][ C0] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 745.901553][ C0] ? validate_chain (kernel/locking/lockdep.c:3802 kernel/locking/lockdep.c:3822 kernel/locking/lockdep.c:3877) 
[ 745.901560][ C0] ? __lock_acquire (kernel/locking/lockdep.c:5235) 
[ 745.901568][ C0] __napi_poll.constprop.0 (net/core/dev.c:7383) 
[ 745.901571][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 745.901578][ C0] net_rx_action (net/core/dev.c:7447 net/core/dev.c:7569) 
[ 745.901589][ C0] ? __pfx_net_rx_action (net/core/dev.c:7531) 
[ 745.901600][ C0] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:95 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 745.901605][ C0] ? ktime_get (kernel/time/timekeeping.c:226 (discriminator 4) kernel/time/timekeeping.c:335 (discriminator 4) kernel/time/timekeeping.c:752 (discriminator 4)) 
[ 745.901613][ C0] ? clockevents_program_event (kernel/time/clockevents.c:334 (discriminator 3)) 
[ 745.901624][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 745.901637][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 745.901640][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 745.901644][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[  745.901650][    C0]  </IRQ>
[  745.901650][    C0]  <TASK>
[ 745.901653][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 745.901658][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 745.901663][ C0] Code: df d3 00 c3 cc cc cc cc 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d e3 70 26 00 fb f4 <c3> cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90
All code
========
   0:	df d3                	(bad)
   2:	00 c3                	add    %al,%bl
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	0f 1f 00             	nopl   (%rax)
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	66 90                	xchg   %ax,%ax
  21:	0f 00 2d e3 70 26 00 	verw   0x2670e3(%rip)        # 0x26710b
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	cc                   	int3
  2c:	cc                   	int3
  2d:	cc                   	int3
  2e:	cc                   	int3
  2f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 
  39:	66 90                	xchg   %ax,%ax
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	cc                   	int3
   2:	cc                   	int3
   3:	cc                   	int3
   4:	cc                   	int3
   5:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 
   f:	66 90                	xchg   %ax,%ax
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[  745.901666][    C0] RSP: 0018:ffffffff8dc07df8 EFLAGS: 00000246
[  745.901669][    C0] RAX: 0000000001191011 RBX: 1ffffffff1b80fc3 RCX: ffffffff8c82ba59
[  745.901672][    C0] RDX: 0000000000000000 RSI: ffffffff8d50b7a2 RDI: ffffffff8cc539c0
[  745.901674][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed100d9c667a
[  745.901675][    C0] R10: ffff88806ce333d3 R11: 0000000000000000 R12: 0000000000000000
[  745.901677][    C0] R13: ffffffff8dc33240 R14: dffffc0000000000 R15: 0000000000014770
[ 745.901685][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 745.901693][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 745.901696][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 745.901699][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 745.901706][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 745.901712][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 745.901721][ C0] do_idle (kernel/sched/idle.c:325) 
[ 745.901727][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 745.901731][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 745.901736][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 745.901743][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:501) 
[ 745.901747][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:443 (discriminator 17)) 


Finger prints:
lockdep_rcu_suspicious:veth_xdp_rcv:veth_poll:net_rx_action:handle_softirqs