======================================
| [  323.330139][    C2] rcu_scheduler_active = 2, debug_locks = 1
| [  323.330528][    C2] no locks held by ksoftirqd/2/27.
| [  323.330799][    C2]
| [  323.330799][    C2] stack backtrace:
[  323.331140][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  323.331143][    C2] Call Trace:
[  323.331145][    C2]  <TASK>
[ 323.331147][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 323.331158][ C2] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6866) 
[ 323.331168][ C2] veth_xdp_rcv (drivers/net/veth.c:907 (discriminator 9)) 
[ 323.331175][ C2] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 323.331181][ C2] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:24) 
[ 323.331190][ C2] ? __pfx_veth_xdp_rcv (drivers/net/veth.c:899) 
[ 323.331194][ C2] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
[ 323.331205][ C2] ? rcu_read_lock_any_held (kernel/rcu/update.c:387 kernel/rcu/update.c:380) 
[ 323.331210][ C2] ? stack_depot_save_flags (lib/stackdepot.c:552 lib/stackdepot.c:619) 
[ 323.331216][ C2] ? validate_chain (kernel/locking/lockdep.c:3802 kernel/locking/lockdep.c:3822 kernel/locking/lockdep.c:3877) 
[ 323.331226][ C2] veth_poll (drivers/net/veth.c:977) 
[ 323.331230][ C2] ? __pfx_veth_poll (drivers/net/veth.c:965) 
[ 323.331233][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 323.331242][ C2] ? trace_pelt_se_tp (./include/trace/events/sched.h:796 (discriminator 21)) 
[ 323.331246][ C2] ? __update_load_avg_se (kernel/sched/pelt.c:314) 
[ 323.331260][ C2] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 323.331263][ C2] ? validate_chain (kernel/locking/lockdep.c:3802 kernel/locking/lockdep.c:3822 kernel/locking/lockdep.c:3877) 
[ 323.331274][ C2] __napi_poll.constprop.0 (net/core/dev.c:7413) 
[ 323.331278][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 323.331285][ C2] net_rx_action (net/core/dev.c:7477 net/core/dev.c:7599) 
[ 323.331295][ C2] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 323.331300][ C2] ? __pfx_net_rx_action (net/core/dev.c:7561) 
[ 323.331303][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 323.331307][ C2] ? trace_sched_exit_tp (./include/trace/events/sched.h:829 (discriminator 21)) 
[ 323.331313][ C2] ? __schedule (kernel/sched/core.c:6646) 
[ 323.331323][ C2] ? __pfx___schedule (kernel/sched/core.c:6646) 
[ 323.331336][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 323.331344][ C2] ? __pfx_run_ksoftirqd (kernel/softirq.c:961) 
[ 323.331350][ C2] run_ksoftirqd (kernel/softirq.c:436 kernel/softirq.c:969 kernel/softirq.c:960) 
[ 323.331353][ C2] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 323.331358][ C2] ? __pfx_smpboot_thread_fn (kernel/smpboot.c:107) 
[ 323.331363][ C2] kthread (kernel/kthread.c:464) 
[ 323.331368][ C2] ? __pfx_kthread (kernel/kthread.c:413) 
[ 323.331370][ C2] ? ret_from_fork (arch/x86/kernel/process.c:152) 
[ 323.331374][ C2] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 323.331379][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 323.331383][ C2] ? __pfx_kthread (kernel/kthread.c:413) 
[ 323.331388][ C2] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 323.331391][ C2] ? __pfx_kthread (kernel/kthread.c:413) 


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