======================================
| [  186.569493][    C2] rcu_scheduler_active = 2, debug_locks = 1
| [  186.569876][    C2] no locks held by ksoftirqd/2/27.
| [  186.570117][    C2]
| [  186.570117][    C2] stack backtrace:
[  186.570416][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  186.570418][    C2] Call Trace:
[  186.570420][    C2]  <TASK>
[ 186.570422][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 186.570433][ C2] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6866) 
[ 186.570443][ C2] veth_xdp_rcv (drivers/net/veth.c:907 (discriminator 9)) 
[ 186.570459][ C2] ? __pfx_veth_xdp_rcv (drivers/net/veth.c:899) 
[ 186.570466][ C2] ? should_we_balance (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:587 kernel/sched/fair.c:11656) 
[ 186.570471][ C2] ? validate_chain (kernel/locking/lockdep.c:3802 kernel/locking/lockdep.c:3822 kernel/locking/lockdep.c:3877) 
[ 186.570486][ C2] veth_poll (drivers/net/veth.c:977) 
[ 186.570491][ C2] ? __pfx_veth_poll (drivers/net/veth.c:965) 
[ 186.570503][ C2] ? lock_acquire.part.0 (kernel/locking/lockdep.c:472 kernel/locking/lockdep.c:5868) 
[ 186.570508][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 186.570513][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 186.570521][ C2] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 186.570525][ C2] ? validate_chain (kernel/locking/lockdep.c:3802 kernel/locking/lockdep.c:3822 kernel/locking/lockdep.c:3877) 
[ 186.570537][ C2] __napi_poll.constprop.0 (net/core/dev.c:7413) 
[ 186.570541][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 186.570548][ C2] net_rx_action (net/core/dev.c:7477 net/core/dev.c:7599) 
[ 186.570558][ C2] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 186.570563][ C2] ? __pfx_net_rx_action (net/core/dev.c:7561) 
[ 186.570566][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 186.570570][ C2] ? trace_sched_exit_tp (./include/trace/events/sched.h:829 (discriminator 21)) 
[ 186.570575][ C2] ? __schedule (kernel/sched/core.c:6646) 
[ 186.570585][ C2] ? __pfx___schedule (kernel/sched/core.c:6646) 
[ 186.570597][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 186.570606][ C2] ? __pfx_run_ksoftirqd (kernel/softirq.c:961) 
[ 186.570612][ C2] run_ksoftirqd (kernel/softirq.c:436 kernel/softirq.c:969 kernel/softirq.c:960) 
[ 186.570615][ C2] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 186.570620][ C2] ? __pfx_smpboot_thread_fn (kernel/smpboot.c:107) 
[ 186.570625][ C2] kthread (kernel/kthread.c:464) 
[ 186.570630][ C2] ? __pfx_kthread (kernel/kthread.c:413) 
[ 186.570632][ C2] ? ret_from_fork (arch/x86/kernel/process.c:152) 
[ 186.570637][ C2] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 186.570642][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 186.570646][ C2] ? __pfx_kthread (kernel/kthread.c:413) 
[ 186.570651][ C2] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 186.570654][ C2] ? __pfx_kthread (kernel/kthread.c:413) 


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