======================================
| [  296.108414][    C1] rcu_scheduler_active = 2, debug_locks = 1
| [  296.108756][    C1] no locks held by ksoftirqd/1/22.
| [  296.108993][    C1]
| [  296.108993][    C1] stack backtrace:
[  296.109297][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  296.109299][    C1] Call Trace:
[  296.109301][    C1]  <TASK>
[ 296.109303][ C1] dump_stack_lvl (lib/dump_stack.c:123) 
[ 296.109315][ C1] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6866) 
[ 296.109325][ C1] veth_xdp_rcv (drivers/net/veth.c:907 (discriminator 9)) 
[ 296.109331][ C1] ? validate_chain (kernel/locking/lockdep.c:3802 kernel/locking/lockdep.c:3822 kernel/locking/lockdep.c:3877) 
[ 296.109340][ C1] ? __lock_acquire (kernel/locking/lockdep.c:5235) 
[ 296.109345][ C1] ? __pfx_veth_xdp_rcv (drivers/net/veth.c:899) 
[ 296.109351][ C1] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 296.109356][ C1] ? validate_chain (kernel/locking/lockdep.c:3802 kernel/locking/lockdep.c:3822 kernel/locking/lockdep.c:3877) 
[ 296.109365][ C1] ? __lock_acquire (kernel/locking/lockdep.c:5235) 
[ 296.109375][ C1] veth_poll (drivers/net/veth.c:977) 
[ 296.109379][ C1] ? __pfx_veth_poll (drivers/net/veth.c:965) 
[ 296.109387][ 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) 
[ 296.109392][ C1] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 296.109398][ C1] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 296.109403][ C1] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 296.109406][ C1] ? validate_chain (kernel/locking/lockdep.c:3802 kernel/locking/lockdep.c:3822 kernel/locking/lockdep.c:3877) 
[ 296.109414][ C1] ? __lock_acquire (kernel/locking/lockdep.c:5235) 
[ 296.109424][ C1] __napi_poll.constprop.0 (net/core/dev.c:7413) 
[ 296.109430][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 296.109436][ C1] net_rx_action (net/core/dev.c:7477 net/core/dev.c:7599) 
[ 296.109448][ C1] ? __pfx_net_rx_action (net/core/dev.c:7561) 
[ 296.109453][ 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) 
[ 296.109458][ C1] ? _raw_spin_unlock_irq (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:160 kernel/locking/spinlock.c:202) 
[ 296.109477][ C1] handle_softirqs (kernel/softirq.c:579) 
[ 296.109485][ C1] ? __pfx_run_ksoftirqd (kernel/softirq.c:961) 
[ 296.109490][ C1] run_ksoftirqd (kernel/softirq.c:436 kernel/softirq.c:969 kernel/softirq.c:960) 
[ 296.109494][ C1] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 296.109499][ C1] ? __pfx_smpboot_thread_fn (kernel/smpboot.c:107) 
[ 296.109503][ C1] kthread (kernel/kthread.c:464) 
[ 296.109508][ C1] ? __pfx_kthread (kernel/kthread.c:413) 
[ 296.109510][ C1] ? ret_from_fork (arch/x86/kernel/process.c:152) 
[ 296.109514][ C1] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 296.109519][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 296.109523][ C1] ? __pfx_kthread (kernel/kthread.c:413) 
[ 296.109528][ C1] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 296.109531][ C1] ? __pfx_kthread (kernel/kthread.c:413) 


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