======================================
| [ 2479.235761][ C2] #6: ffffffffa51447e0 (rcu_read_lock){....}-{1:2}, at: netif_receive_skb_internal (./include/linux/rcupdate.h:298 (discriminator 16) ./include/linux/rcupdate.h:750 (discriminator 16) net/core/dev.c:5729 (discriminator 16)) 
| [ 2479.236287][ C2] #7: ffffffffa51447e0 (rcu_read_lock){....}-{1:2}, at: ip_local_deliver_finish (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/ipv4/ip_input.c:232) 
| [ 2479.236787][    C2]
| [ 2479.236787][    C2] stack backtrace:
[ 2479.237499][    C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 2479.238122][    C2] Call Trace:
[ 2479.238291][    C2]  <TASK>
[ 2479.238442][ C2] dump_stack_lvl (lib/dump_stack.c:107) 
[ 2479.238692][ C2] validate_chain (kernel/locking/lockdep.c:3859) 
[ 2479.238931][ C2] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) 
[ 2479.239214][ C2] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 2479.239443][ C2] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) 
[ 2479.239681][ C2] __lock_acquire (kernel/locking/lockdep.c:5137) 
[ 2479.239922][ C2] ? lock_downgrade (kernel/locking/lockdep.c:5656) 
[ 2479.240190][ C2] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) 
[ 2479.240410][ C2] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[ 2479.240685][ C2] ? tcp_v4_rcv (./include/linux/skbuff.h:1624 ./include/net/tcp.h:2512 net/ipv4/tcp_ipv4.c:2327) 
[ 2479.240957][ C2] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 2479.241256][ C2] ? __pfx_sk_filter_trim_cap (net/core/filter.c:130) 
[ 2479.241577][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 2479.241817][ C2] ? tcp_v4_rcv (./include/linux/skbuff.h:1624 ./include/net/tcp.h:2512 net/ipv4/tcp_ipv4.c:2327) 
[ 2479.242088][ C2] _raw_spin_lock_nested (kernel/locking/spinlock.c:379) 
[ 2479.242362][ C2] ? tcp_v4_rcv (./include/linux/skbuff.h:1624 ./include/net/tcp.h:2512 net/ipv4/tcp_ipv4.c:2327) 
[ 2479.242604][ C2] tcp_v4_rcv (./include/linux/skbuff.h:1624 ./include/net/tcp.h:2512 net/ipv4/tcp_ipv4.c:2327) 
[ 2479.242874][ C2] ? __pfx_tcp_v4_rcv (net/ipv4/tcp_ipv4.c:2163) 
[ 2479.243143][ C2] ? __pfx_raw_v4_input (net/ipv4/raw.c:165) 
[ 2479.243410][ C2] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 2479.243719][ C2] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:207 (discriminator 8)) 
[ 2479.244029][ C2] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) 
[ 2479.244345][ C2] ip_local_deliver (./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:254) 
[ 2479.244600][ C2] ? __pfx_ip_local_deliver (net/ipv4/ip_input.c:243) 
[ 2479.244906][ C2] ? ip_rcv_finish_core.constprop.0 (./include/linux/skbuff.h:1136 ./include/linux/skbuff.h:1188 net/ipv4/ip_input.c:390) 
[ 2479.245237][ C2] ip_rcv (./include/net/dst.h:460 net/ipv4/ip_input.c:449 ./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:569) 
[ 2479.245463][ C2] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) 
[ 2479.245708][ C2] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[ 2479.246010][ C2] ? netif_receive_skb_internal (./include/linux/rcupdate.h:298 (discriminator 16) ./include/linux/rcupdate.h:750 (discriminator 16) net/core/dev.c:5729 (discriminator 16)) 
[ 2479.246305][ C2] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) 
[ 2479.246532][ C2] __netif_receive_skb_one_core (net/core/dev.c:5542 (discriminator 4)) 
[ 2479.246870][ C2] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5535) 
[ 2479.247223][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 2479.247475][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 2479.247709][ C2] ? netif_receive_skb_internal (./include/linux/rcupdate.h:298 (discriminator 16) ./include/linux/rcupdate.h:750 (discriminator 16) net/core/dev.c:5729 (discriminator 16)) 
[ 2479.248035][ C2] netif_receive_skb_internal (net/core/dev.c:5742) 
[ 2479.248339][ C2] ? __pfx_netif_receive_skb_internal (net/core/dev.c:5721) 
[ 2479.248677][ C2] ? __copy_skb_header (./include/net/dst.h:290 net/core/skbuff.c:1426) 
[ 2479.248930][ C2] ? __skb_clone (./arch/x86/include/asm/atomic.h:53 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:992 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:436 (discriminator 4) net/core/skbuff.c:1497 (discriminator 4)) 
[ 2479.249183][ C2] netif_receive_skb (net/core/dev.c:5801) 
[ 2479.249432][ C2] tcf_mirred_to_dev (net/sched/act_mirred.c:249 net/sched/act_mirred.c:324) act_mirred
[ 2479.249775][ C2] ? __pfx_tcf_skbedit_act (net/sched/act_skbedit.c:43) act_skbedit
[ 2479.250144][ C2] tcf_mirred_act (net/sched/act_mirred.c:459 (discriminator 2)) act_mirred
[ 2479.250434][ C2] tcf_action_exec.part.0 (./include/net/tc_wrapper.h:130 net/sched/act_api.c:1100) 
[ 2479.250730][ C2] fl_classify (net/sched/cls_flower.c:345) cls_flower
[ 2479.251033][ C2] ? __pfx_fl_classify (net/sched/cls_flower.c:316) cls_flower
[ 2479.251369][ C2] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) 
[ 2479.251620][ C2] ? check_irq_usage (kernel/locking/lockdep.c:2823) 
[ 2479.251903][ C2] ? validate_chain (kernel/locking/lockdep.c:3880) 
[ 2479.252178][ C2] ? __pfx_check_irq_usage (kernel/locking/lockdep.c:2790) 
[ 2479.252479][ C2] ? __bfs (kernel/locking/lockdep.c:1787) 
[ 2479.252684][ C2] ? __pfx_hlock_conflict (kernel/locking/lockdep.c:2016) 
[ 2479.252969][ C2] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) 
[ 2479.253252][ C2] ? check_path.constprop.0 (kernel/locking/lockdep.c:2145) 
[ 2479.253547][ C2] ? check_noncircular (kernel/locking/lockdep.c:2172) 
[ 2479.253806][ C2] ? __pfx_check_noncircular (kernel/locking/lockdep.c:2163) 
[ 2479.254103][ C2] __tcf_classify (./include/net/tc_wrapper.h:197 net/sched/cls_api.c:1734) 
[ 2479.254352][ C2] tcf_classify (net/sched/cls_api.c:1830) 
[ 2479.254610][ C2] ? __pfx_tcf_classify (net/sched/cls_api.c:1779) 
[ 2479.254880][ C2] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[ 2479.255172][ C2] ? __dev_queue_xmit (./include/linux/bottom_half.h:20 ./include/linux/rcupdate.h:802 net/core/dev.c:4284) 
[ 2479.255431][ C2] tc_run (net/core/dev.c:3945) 
[ 2479.255651][ C2] ? __pfx_tc_run (net/core/dev.c:3929) 
[ 2479.255912][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 2479.256158][ C2] ? __dev_queue_xmit (./include/linux/bottom_half.h:20 ./include/linux/rcupdate.h:802 net/core/dev.c:4284) 
[ 2479.256466][ C2] __dev_queue_xmit (net/core/dev.c:4069 net/core/dev.c:4301) 
[ 2479.256729][ C2] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 2479.256999][ C2] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) 
[ 2479.257238][ C2] ? __pfx___dev_queue_xmit (net/core/dev.c:4268) 
[ 2479.257516][ C2] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4292 kernel/locking/lockdep.c:4359) 
[ 2479.257874][ C2] ? neigh_hh_output (./include/linux/seqlock.h:74 ./include/linux/seqlock.h:772 ./include/net/neighbour.h:496) 
[ 2479.258125][ C2] ip_finish_output2 (./include/net/neighbour.h:540 net/ipv4/ip_output.c:235) 
[ 2479.258401][ C2] ? __pfx_ip_finish_output2 (net/ipv4/ip_output.c:199) 
[ 2479.258675][ C2] ? __ip_finish_output (net/ipv4/ip_output.c:256 net/ipv4/ip_output.c:308 net/ipv4/ip_output.c:295) 
[ 2479.258962][ C2] ip_output (./include/linux/netfilter.h:303 net/ipv4/ip_output.c:433) 
[ 2479.259176][ C2] ? __pfx_ip_output (net/ipv4/ip_output.c:427) 
[ 2479.259413][ C2] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 2479.259718][ C2] ? ip_local_out (./include/linux/skbuff.h:1136 ./include/net/dst.h:450 net/ipv4/ip_output.c:129) 
[ 2479.259952][ C2] __ip_queue_xmit (net/ipv4/ip_output.c:535 (discriminator 4)) 
[ 2479.260215][ C2] ? __skb_clone (./arch/x86/include/asm/atomic.h:53 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:992 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:436 (discriminator 4) net/core/skbuff.c:1497 (discriminator 4)) 
[ 2479.260448][ C2] __tcp_transmit_skb (net/ipv4/tcp_output.c:1462 (discriminator 4)) 
[ 2479.260733][ C2] ? __pfx___tcp_transmit_skb (net/ipv4/tcp_output.c:1283) 
[ 2479.261009][ C2] ? tcp_small_queue_check.isra.0 (./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:136 net/ipv4/tcp_output.c:2623) 
[ 2479.261326][ C2] tcp_write_xmit (net/ipv4/tcp_output.c:2792) 
[ 2479.261572][ C2] ? ipv4_mtu (./include/net/net_namespace.h:383 ./include/linux/netdevice.h:2651 ./include/net/ip.h:465 net/ipv4/route.c:1326) 
[ 2479.261804][ C2] ? __pfx_tcp_write_xmit (net/ipv4/tcp_output.c:2702) 
[ 2479.262064][ C2] ? __pfx_tcp_current_mss (net/ipv4/tcp_output.c:1853) 
[ 2479.262357][ C2] __tcp_push_pending_frames (net/ipv4/tcp_output.c:2977) 
[ 2479.262631][ C2] tcp_rcv_state_process (net/ipv4/tcp_input.c:5654 net/ipv4/tcp_input.c:6881) 
[ 2479.262920][ C2] ? __pfx_tcp_rcv_state_process (net/ipv4/tcp_input.c:6621) 
[ 2479.263212][ C2] ? find_held_lock (kernel/locking/lockdep.c:5244) 
[ 2479.263450][ C2] ? tcp_v4_rcv (./include/linux/skbuff.h:1624 ./include/net/tcp.h:2512 net/ipv4/tcp_ipv4.c:2327) 
[ 2479.263705][ C2] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 2479.263933][ C2] tcp_v4_do_rcv (net/ipv4/tcp_ipv4.c:1930) 
[ 2479.264213][ C2] ? __pfx_tcp_v4_do_rcv (net/ipv4/tcp_ipv4.c:1887) 
[ 2479.264470][ C2] tcp_v4_rcv (net/ipv4/tcp_ipv4.c:2330) 
[ 2479.264723][ C2] ? __pfx_tcp_v4_rcv (net/ipv4/tcp_ipv4.c:2163) 
[ 2479.264990][ C2] ? __pfx_raw_v4_input (net/ipv4/raw.c:165) 
[ 2479.265256][ C2] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 2479.265583][ C2] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:207 (discriminator 8)) 
[ 2479.265865][ C2] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) 
[ 2479.266161][ C2] ip_local_deliver (./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:254) 
[ 2479.266418][ C2] ? __pfx_ip_local_deliver (net/ipv4/ip_input.c:243) 
[ 2479.266725][ C2] ? ip_rcv_finish_core.constprop.0 (./include/linux/skbuff.h:1136 ./include/linux/skbuff.h:1188 net/ipv4/ip_input.c:390) 
[ 2479.267091][ C2] ip_rcv (./include/net/dst.h:460 net/ipv4/ip_input.c:449 ./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:569) 
[ 2479.267292][ C2] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) 
[ 2479.267547][ C2] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[ 2479.267814][ C2] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:5983) 
[ 2479.268080][ C2] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) 
[ 2479.268319][ C2] __netif_receive_skb_one_core (net/core/dev.c:5542 (discriminator 4)) 
[ 2479.268632][ C2] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5535) 
[ 2479.268970][ C2] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 2479.269252][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 2479.269515][ C2] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:5983) 
[ 2479.269770][ C2] process_backlog (./include/linux/rcupdate.h:779 net/core/dev.c:5985) 
[ 2479.270039][ C2] __napi_poll.constprop.0 (net/core/dev.c:6584) 
[ 2479.270320][ C2] net_rx_action (net/core/dev.c:6653 net/core/dev.c:6786) 
[ 2479.270583][ C2] ? __pfx_net_rx_action (net/core/dev.c:6750) 
[ 2479.270864][ C2] ? __pfx___schedule (kernel/sched/core.c:6608) 
[ 2479.271133][ C2] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) 
[ 2479.271407][ C2] __do_softirq (kernel/softirq.c:553) 
[ 2479.271683][ C2] ? __pfx_run_ksoftirqd (kernel/softirq.c:914) 
[ 2479.271974][ C2] run_ksoftirqd (kernel/softirq.c:410 kernel/softirq.c:922 kernel/softirq.c:913) 
[ 2479.272230][ C2] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 2479.272481][ C2] ? __pfx_smpboot_thread_fn (kernel/smpboot.c:107) 
[ 2479.272785][ C2] ? __pfx_smpboot_thread_fn (kernel/smpboot.c:107) 
[ 2479.273090][ C2] kthread (kernel/kthread.c:388) 
[ 2479.273318][ C2] ? __pfx_kthread (kernel/kthread.c:341) 
[ 2479.273575][ C2] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 2479.273818][ C2] ? __pfx_kthread (kernel/kthread.c:341) 


Finger prints:
dump_stack_lvl:validate_chain:__lock_acquire:_raw_spin_lock_nested