======================================
| [   16.107783][    C2] rcu_scheduler_active = 2, debug_locks = 1
| [   16.108148][    C2] no locks held by ksoftirqd/2/27.
| [   16.108392][    C2]
| [   16.108392][    C2] stack backtrace:
[   16.108693][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   16.108695][    C2] Call Trace:
[   16.108697][    C2]  <TASK>
[ 16.108700][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 16.108711][ C2] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6866) 
[ 16.108721][ C2] veth_xdp_rcv (drivers/net/veth.c:907 (discriminator 9)) 
[ 16.108728][ C2] ? kasan_quarantine_put (mm/kasan/quarantine.c:234 (discriminator 1)) 
[ 16.108741][ C2] ? __pfx_veth_xdp_rcv (drivers/net/veth.c:899) 
[ 16.108744][ C2] ? arp_process (net/ipv4/arp.c:944) 
[ 16.108753][ C2] ? arp_process (net/ipv4/arp.c:945) 
[ 16.108767][ C2] veth_poll (drivers/net/veth.c:977) 
[ 16.108772][ C2] ? __pfx_veth_poll (drivers/net/veth.c:965) 
[ 16.108783][ C2] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 16.108789][ C2] ? process_backlog (net/core/dev.c:6443) 
[ 16.108792][ C2] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 16.108798][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 16.108803][ C2] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 16.108810][ C2] ? _raw_spin_unlock_irq (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:160 kernel/locking/spinlock.c:202) 
[ 16.108814][ C2] ? process_backlog (net/core/dev.c:6443) 
[ 16.108819][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 16.108826][ C2] __napi_poll.constprop.0 (net/core/dev.c:7383) 
[ 16.108829][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 16.108835][ C2] net_rx_action (net/core/dev.c:7447 net/core/dev.c:7569) 
[ 16.108845][ C2] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 16.108849][ C2] ? __pfx_net_rx_action (net/core/dev.c:7531) 
[ 16.108852][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 16.108856][ C2] ? trace_sched_exit_tp (./include/trace/events/sched.h:829 (discriminator 21)) 
[ 16.108863][ C2] ? __schedule (kernel/sched/core.c:6646) 
[ 16.108872][ C2] ? __pfx___schedule (kernel/sched/core.c:6646) 
[ 16.108885][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 16.108894][ C2] ? __pfx_run_ksoftirqd (kernel/softirq.c:961) 
[ 16.108900][ C2] run_ksoftirqd (kernel/softirq.c:436 kernel/softirq.c:969 kernel/softirq.c:960) 
[ 16.108903][ C2] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 16.108908][ C2] ? __pfx_smpboot_thread_fn (kernel/smpboot.c:107) 
[ 16.108913][ C2] kthread (kernel/kthread.c:464) 
[ 16.108918][ C2] ? __pfx_kthread (kernel/kthread.c:413) 
[ 16.108920][ C2] ? ret_from_fork (arch/x86/kernel/process.c:152) 
[ 16.108924][ C2] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 16.108929][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 16.108933][ C2] ? __pfx_kthread (kernel/kthread.c:413) 
[ 16.108938][ C2] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 16.108941][ C2] ? __pfx_kthread (kernel/kthread.c:413) 


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