======================================
| [ 440.152690][ C1] #0: ffffffffaa79d4e0 (rcu_read_lock){....}-{1:3}, at: process_backlog (./include/linux/local_lock_internal.h:54 net/core/dev.c:6438) 
| [ 440.153305][ C1] #1: ffffffffaa79d4e0 (rcu_read_lock){....}-{1:3}, at: ip_local_deliver_finish (./include/linux/rcupdate.h:331 ./include/linux/rcupdate.h:841 net/ipv4/ip_input.c:232) 
| [  440.153993][    C1]
| [  440.153993][    C1] stack backtrace:
[  440.154416][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  440.154419][    C1] Call Trace:
[  440.154421][    C1]  <TASK>
[ 440.154425][ C1] dump_stack_lvl (lib/dump_stack.c:123) 
[ 440.154435][ C1] print_usage_bug.part.0 (kernel/locking/lockdep.c:4048) 
[ 440.154445][ C1] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4059 kernel/locking/lockdep.c:4270) 
[ 440.154454][ C1] ? save_trace (kernel/locking/lockdep.c:595) 
[ 440.154462][ C1] mark_lock (kernel/locking/lockdep.c:4756) 
[ 440.154470][ C1] mark_usage (kernel/locking/lockdep.c:4645) 
[ 440.154476][ C1] __lock_acquire (kernel/locking/lockdep.c:5194) 
[ 440.154482][ C1] ? unwind_next_frame (./include/linux/rcupdate.h:874 ./include/linux/rcupdate.h:1155 arch/x86/kernel/unwind_orc.c:479) 
[ 440.154489][ C1] ? smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 440.154497][ C1] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 440.154503][ C1] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 440.154508][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 440.154516][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 440.154521][ C1] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 440.154528][ C1] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 440.154535][ C1] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 440.154539][ C1] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 440.154545][ C1] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 440.154550][ C1] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 440.154560][ C1] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 440.154567][ C1] ref_tracker_dir_exit (lib/ref_tracker.c:54 lib/ref_tracker.c:223) 
[ 440.154574][ C1] ? trace_kfree (./include/trace/events/kmem.h:94 (discriminator 21)) 
[ 440.154581][ C1] ? kfree (mm/slub.c:4831) 
[ 440.154586][ C1] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 440.154593][ C1] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 440.154600][ C1] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 440.154606][ C1] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 440.154611][ C1] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 440.154617][ C1] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 440.154623][ C1] ? tcp_v4_err (./include/net/sock.h:1960 net/ipv4/tcp_ipv4.c:658) 
[ 440.154629][ C1] ? icmp_unreach (net/ipv4/icmp.c:969) 
[ 440.154635][ C1] ? icmp_rcv (net/ipv4/icmp.c:1294) 
[ 440.154642][ C1] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 440.154649][ C1] ? handle_softirqs (kernel/softirq.c:580) 
[ 440.154656][ C1] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 440.154664][ C1] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 440.154690][ C1] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 440.154697][ C1] tcp_v4_err (./include/net/sock.h:1960 net/ipv4/tcp_ipv4.c:658) 
[ 440.154708][ C1] icmp_unreach (net/ipv4/icmp.c:969) 
[ 440.154713][ C1] ? __skb_checksum_complete (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/linux/refcount.h:170 ./include/linux/skbuff.h:2065 net/core/skbuff.c:3737) 
[ 440.154721][ C1] icmp_rcv (net/ipv4/icmp.c:1294) 
[ 440.154730][ C1] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:205 (discriminator 5)) 
[ 440.154740][ C1] ip_local_deliver_finish (./include/linux/rcupdate.h:869 net/ipv4/ip_input.c:234) 
[ 440.154746][ C1] ip_local_deliver (./include/linux/netfilter.h:317 ./include/linux/netfilter.h:311 net/ipv4/ip_input.c:254) 
[ 440.154753][ C1] ? __pfx_ip_local_deliver (net/ipv4/ip_input.c:243) 
[ 440.154762][ C1] ? ip_rcv_finish_core (./include/net/net_namespace.h:409 (discriminator 3) ./include/linux/netdevice.h:2713 (discriminator 3) net/ipv4/ip_input.c:372 (discriminator 3)) 
[ 440.154771][ C1] ? process_backlog (./include/linux/local_lock_internal.h:54 net/core/dev.c:6438) 
[ 440.154777][ C1] ip_rcv (./include/net/dst.h:469 net/ipv4/ip_input.c:447 ./include/linux/netfilter.h:317 ./include/linux/netfilter.h:311 net/ipv4/ip_input.c:567) 
[ 440.154784][ C1] ? __pfx_ip_rcv (net/ipv4/ip_input.c:560) 
[ 440.154789][ C1] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 440.154796][ C1] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 440.154805][ C1] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 440.154812][ C1] ? __pfx_ip_rcv (net/ipv4/ip_input.c:560) 
[ 440.154817][ C1] ? process_backlog (./include/linux/local_lock_internal.h:54 net/core/dev.c:6438) 
[ 440.154822][ C1] __netif_receive_skb_one_core (net/core/dev.c:5975 (discriminator 4)) 
[ 440.154829][ C1] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5968) 
[ 440.154836][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 440.154842][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 440.154847][ C1] ? process_backlog (./include/linux/local_lock_internal.h:54 net/core/dev.c:6438) 
[ 440.154855][ C1] process_backlog (./include/linux/rcupdate.h:869 net/core/dev.c:6441) 
[ 440.154863][ C1] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 440.154871][ C1] __napi_poll.constprop.0 (net/core/dev.c:7453) 
[ 440.154876][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 440.154883][ C1] net_rx_action (net/core/dev.c:7517 net/core/dev.c:7644) 
[ 440.154891][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 440.154900][ C1] ? __pfx_net_rx_action (net/core/dev.c:7606) 
[ 440.154906][ C1] ? trace_sched_exit_tp (./include/trace/events/sched.h:888 (discriminator 21)) 
[ 440.154914][ C1] ? __schedule (kernel/sched/core.c:6662) 
[ 440.154924][ C1] ? __pfx___schedule (kernel/sched/core.c:6662) 
[ 440.154938][ C1] handle_softirqs (kernel/softirq.c:580) 
[ 440.154945][ C1] ? __pfx_run_ksoftirqd (kernel/softirq.c:961) 
[ 440.154951][ C1] run_ksoftirqd (kernel/softirq.c:436 kernel/softirq.c:969 kernel/softirq.c:960) 
[ 440.154955][ C1] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 440.154961][ C1] ? __pfx_smpboot_thread_fn (kernel/smpboot.c:107) 
[ 440.154968][ C1] kthread (kernel/kthread.c:464) 
[ 440.154975][ C1] ? __pfx_kthread (kernel/kthread.c:413) 
[ 440.154980][ C1] ? ret_from_fork (arch/x86/kernel/process.c:147) 
[ 440.154986][ C1] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 440.154993][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 440.154999][ C1] ? __pfx_kthread (kernel/kthread.c:413) 
[ 440.155005][ C1] ret_from_fork (arch/x86/kernel/process.c:148) 
[ 440.155010][ C1] ? __pfx_kthread (kernel/kthread.c:413) 


Finger prints:
mark_lock_irq:mark_lock:mark_usage:__lock_acquire:_raw_spin_lock