======================================
| [  227.052794][    C1] rcu_scheduler_active = 2, debug_locks = 1
| [  227.053138][    C1] no locks held by ksoftirqd/1/22.
| [  227.053374][    C1]
| [  227.053374][    C1] stack backtrace:
[  227.053682][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  227.053684][    C1] Call Trace:
[  227.053687][    C1]  <TASK>
[ 227.053690][ C1] dump_stack_lvl (lib/dump_stack.c:123) 
[ 227.053703][ C1] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6866) 
[ 227.053714][ C1] veth_xdp_rcv (drivers/net/veth.c:907 (discriminator 9)) 
[ 227.053721][ C1] ? validate_chain (kernel/locking/lockdep.c:3802 kernel/locking/lockdep.c:3822 kernel/locking/lockdep.c:3877) 
[ 227.053730][ C1] ? __lock_acquire (kernel/locking/lockdep.c:5235) 
[ 227.053736][ C1] ? __pfx_veth_xdp_rcv (drivers/net/veth.c:899) 
[ 227.053742][ C1] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 227.053749][ C1] ? validate_chain (kernel/locking/lockdep.c:3802 kernel/locking/lockdep.c:3822 kernel/locking/lockdep.c:3877) 
[ 227.053757][ C1] ? __lock_acquire (kernel/locking/lockdep.c:5235) 
[ 227.053767][ C1] veth_poll (drivers/net/veth.c:977) 
[ 227.053771][ C1] ? __pfx_veth_poll (drivers/net/veth.c:965) 
[ 227.053780][ C1] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 227.053786][ C1] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 227.053793][ C1] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 227.053799][ C1] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 227.053802][ C1] ? validate_chain (kernel/locking/lockdep.c:3802 kernel/locking/lockdep.c:3822 kernel/locking/lockdep.c:3877) 
[ 227.053810][ C1] ? __lock_acquire (kernel/locking/lockdep.c:5235) 
[ 227.053821][ C1] __napi_poll.constprop.0 (net/core/dev.c:7383) 
[ 227.053826][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 227.053832][ C1] net_rx_action (net/core/dev.c:7447 net/core/dev.c:7569) 
[ 227.053844][ C1] ? __pfx_net_rx_action (net/core/dev.c:7531) 
[ 227.053849][ C1] ? _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) 
[ 227.053854][ C1] ? _raw_spin_unlock_irq (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:160 kernel/locking/spinlock.c:202) 
[ 227.053873][ C1] handle_softirqs (kernel/softirq.c:579) 
[ 227.053882][ C1] ? __pfx_run_ksoftirqd (kernel/softirq.c:961) 
[ 227.053888][ C1] run_ksoftirqd (kernel/softirq.c:436 kernel/softirq.c:969 kernel/softirq.c:960) 
[ 227.053891][ C1] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 227.053896][ C1] ? __pfx_smpboot_thread_fn (kernel/smpboot.c:107) 
[ 227.053901][ C1] kthread (kernel/kthread.c:464) 
[ 227.053906][ C1] ? __pfx_kthread (kernel/kthread.c:413) 
[ 227.053908][ C1] ? ret_from_fork (arch/x86/kernel/process.c:152) 
[ 227.053912][ C1] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 227.053917][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 227.053921][ C1] ? __pfx_kthread (kernel/kthread.c:413) 
[ 227.053926][ C1] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 227.053930][ C1] ? __pfx_kthread (kernel/kthread.c:413) 


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