======================================
| [ 1945.773873][ C0] #6: ffffffff921447e0 (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)) 
| [ 1945.774417][ C0] #7: ffffffff921447e0 (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) 
| [ 1945.774963][    C0]
| [ 1945.774963][    C0] stack backtrace:
[ 1945.775707][    C0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1945.776338][    C0] Call Trace:
[ 1945.776530][    C0]  <TASK>
[ 1945.776690][ C0] dump_stack_lvl (lib/dump_stack.c:107) 
[ 1945.776948][ C0] validate_chain (kernel/locking/lockdep.c:3859) 
[ 1945.777208][ C0] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) 
[ 1945.777488][ C0] ? 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) 
[ 1945.777737][ C0] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) 
[ 1945.777970][ C0] __lock_acquire (kernel/locking/lockdep.c:5137) 
[ 1945.778232][ C0] ? lock_downgrade (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:67 ./arch/x86/include/asm/irqflags.h:103 kernel/locking/lockdep.c:5653) 
[ 1945.778499][ C0] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) 
[ 1945.778740][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[ 1945.779005][ C0] ? tcp_v4_rcv (./include/linux/skbuff.h:1619 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) 
[ 1945.779251][ C0] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 1945.779562][ C0] ? __pfx_sk_filter_trim_cap (net/core/filter.c:130) 
[ 1945.779863][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1945.780110][ C0] ? tcp_v4_rcv (./include/linux/skbuff.h:1619 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) 
[ 1945.780379][ C0] _raw_spin_lock_nested (kernel/locking/spinlock.c:379) 
[ 1945.780656][ C0] ? tcp_v4_rcv (./include/linux/skbuff.h:1619 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) 
[ 1945.780907][ C0] tcp_v4_rcv (./include/linux/skbuff.h:1619 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) 
[ 1945.781152][ C0] ? __pfx_tcp_v4_rcv (net/ipv4/tcp_ipv4.c:2162) 
[ 1945.781426][ C0] ? __pfx_raw_v4_input (net/ipv4/raw.c:165) 
[ 1945.781702][ C0] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 1945.782007][ C0] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:207 (discriminator 8)) 
[ 1945.782304][ C0] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) 
[ 1945.782596][ C0] ip_local_deliver (./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:254) 
[ 1945.782864][ C0] ? __pfx_ip_local_deliver (net/ipv4/ip_input.c:243) 
[ 1945.783152][ C0] ? ip_rcv_finish_core.constprop.0 (./include/linux/skbuff.h:1131 ./include/linux/skbuff.h:1183 net/ipv4/ip_input.c:390) 
[ 1945.783496][ C0] ip_rcv (./include/net/dst.h:461 net/ipv4/ip_input.c:449 ./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:569) 
[ 1945.783705][ C0] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) 
[ 1945.783956][ C0] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[ 1945.784238][ C0] ? 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)) 
[ 1945.784542][ C0] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) 
[ 1945.784784][ C0] __netif_receive_skb_one_core (net/core/dev.c:5542 (discriminator 4)) 
[ 1945.785095][ C0] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5535) 
[ 1945.785446][ C0] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 1945.785702][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1945.785954][ C0] ? 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)) 
[ 1945.786266][ C0] netif_receive_skb_internal (net/core/dev.c:5742) 
[ 1945.786582][ C0] ? __pfx_netif_receive_skb_internal (net/core/dev.c:5721) 
[ 1945.786918][ C0] ? __copy_skb_header (./include/net/dst.h:290 net/core/skbuff.c:1420) 
[ 1945.787187][ C0] ? __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:1491 (discriminator 4)) 
[ 1945.787455][ C0] netif_receive_skb (net/core/dev.c:5801) 
[ 1945.787720][ C0] tcf_mirred_to_dev (net/sched/act_mirred.c:249 net/sched/act_mirred.c:324) act_mirred
[ 1945.788056][ C0] ? __pfx_tcf_skbedit_act (net/sched/act_skbedit.c:43) act_skbedit
[ 1945.788406][ C0] tcf_mirred_act (net/sched/act_mirred.c:459 (discriminator 2)) act_mirred
[ 1945.788725][ C0] tcf_action_exec.part.0 (./include/net/tc_wrapper.h:130 net/sched/act_api.c:1100) 
[ 1945.789018][ C0] fl_classify (net/sched/cls_flower.c:345) cls_flower
[ 1945.789332][ C0] ? __pfx_fl_classify (net/sched/cls_flower.c:316) cls_flower
[ 1945.789653][ C0] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) 
[ 1945.789928][ C0] ? check_irq_usage (kernel/locking/lockdep.c:2823) 
[ 1945.790191][ C0] ? __lock_release (kernel/locking/lockdep.c:353 kernel/locking/lockdep.c:5436) 
[ 1945.790471][ C0] ? __pfx_check_irq_usage (kernel/locking/lockdep.c:2790) 
[ 1945.790761][ C0] ? __bfs (kernel/locking/lockdep.c:1787) 
[ 1945.790976][ C0] ? __pfx_hlock_conflict (kernel/locking/lockdep.c:2016) 
[ 1945.791255][ C0] ? __bfs (kernel/locking/lockdep.c:1787) 
[ 1945.791480][ C0] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) 
[ 1945.791748][ C0] ? check_path.constprop.0 (kernel/locking/lockdep.c:2145) 
[ 1945.792042][ C0] ? check_noncircular (kernel/locking/lockdep.c:2172) 
[ 1945.792322][ C0] ? __pfx_check_noncircular (kernel/locking/lockdep.c:2163) 
[ 1945.792627][ C0] __tcf_classify (./include/net/tc_wrapper.h:197 net/sched/cls_api.c:1734) 
[ 1945.792881][ C0] tcf_classify (net/sched/cls_api.c:1830) 
[ 1945.793142][ C0] ? __pfx_tcf_classify (net/sched/cls_api.c:1779) 
[ 1945.793410][ C0] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[ 1945.793706][ C0] ? __dev_queue_xmit (./include/linux/bottom_half.h:20 ./include/linux/rcupdate.h:802 net/core/dev.c:4284) 
[ 1945.793988][ C0] tc_run (net/core/dev.c:3945) 
[ 1945.794207][ C0] ? __pfx_tc_run (net/core/dev.c:3929) 
[ 1945.794472][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1945.794725][ C0] ? __dev_queue_xmit (./include/linux/bottom_half.h:20 ./include/linux/rcupdate.h:802 net/core/dev.c:4284) 
[ 1945.795010][ C0] __dev_queue_xmit (net/core/dev.c:4069 net/core/dev.c:4301) 
[ 1945.795276][ C0] ? 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) 
[ 1945.795534][ C0] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) 
[ 1945.795763][ C0] ? __pfx___dev_queue_xmit (net/core/dev.c:4268) 
[ 1945.796057][ C0] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4292 kernel/locking/lockdep.c:4359) 
[ 1945.796417][ C0] ? neigh_hh_output (./include/linux/seqlock.h:74 ./include/linux/seqlock.h:772 ./include/net/neighbour.h:496) 
[ 1945.796682][ C0] ip_finish_output2 (./include/net/neighbour.h:540 net/ipv4/ip_output.c:235) 
[ 1945.796958][ C0] ? __pfx_ip_finish_output2 (net/ipv4/ip_output.c:199) 
[ 1945.797249][ C0] ? __ip_finish_output (net/ipv4/ip_output.c:256 net/ipv4/ip_output.c:308 net/ipv4/ip_output.c:295) 
[ 1945.797522][ C0] ip_output (./include/linux/netfilter.h:303 net/ipv4/ip_output.c:433) 
[ 1945.797760][ C0] ? __pfx_ip_output (net/ipv4/ip_output.c:427) 
[ 1945.798018][ C0] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 1945.798328][ C0] ? ip_local_out (./include/linux/skbuff.h:1131 ./include/net/dst.h:451 net/ipv4/ip_output.c:129) 
[ 1945.798576][ C0] __ip_queue_xmit (net/ipv4/ip_output.c:535 (discriminator 4)) 
[ 1945.798839][ C0] ? __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:1491 (discriminator 4)) 
[ 1945.799088][ C0] __tcp_transmit_skb (net/ipv4/tcp_output.c:1462 (discriminator 4)) 
[ 1945.799390][ C0] ? __pfx___tcp_transmit_skb (net/ipv4/tcp_output.c:1283) 
[ 1945.799689][ C0] ? 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) 
[ 1945.800025][ C0] tcp_write_xmit (net/ipv4/tcp_output.c:2792) 
[ 1945.800294][ C0] ? ipv4_mtu (./include/net/net_namespace.h:385 ./include/linux/netdevice.h:2651 ./include/net/ip.h:465 net/ipv4/route.c:1326) 
[ 1945.800529][ C0] ? __pfx_tcp_write_xmit (net/ipv4/tcp_output.c:2702) 
[ 1945.800812][ C0] ? __pfx_tcp_current_mss (net/ipv4/tcp_output.c:1853) 
[ 1945.801095][ C0] __tcp_push_pending_frames (net/ipv4/tcp_output.c:2977) 
[ 1945.801401][ C0] tcp_rcv_state_process (net/ipv4/tcp_input.c:5654 net/ipv4/tcp_input.c:6870) 
[ 1945.801691][ C0] ? tcp_v4_rcv (./include/linux/skbuff.h:1619 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) 
[ 1945.801941][ C0] ? 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) 
[ 1945.802197][ C0] ? __lock_acquired (kernel/locking/lockdep.c:339 kernel/locking/lockdep.c:5991) 
[ 1945.802463][ C0] ? __pfx_tcp_rcv_state_process (net/ipv4/tcp_input.c:6620) 
[ 1945.802767][ C0] ? __pfx___lock_acquired (kernel/locking/lockdep.c:5959) 
[ 1945.803066][ C0] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 1945.803374][ C0] tcp_v4_do_rcv (net/ipv4/tcp_ipv4.c:1929) 
[ 1945.803624][ C0] tcp_v4_rcv (net/ipv4/tcp_ipv4.c:2329) 
[ 1945.803883][ C0] ? __pfx_tcp_v4_rcv (net/ipv4/tcp_ipv4.c:2162) 
[ 1945.804158][ C0] ? __pfx_raw_v4_input (net/ipv4/raw.c:165) 
[ 1945.804434][ C0] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 1945.804735][ C0] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:207 (discriminator 8)) 
[ 1945.805036][ C0] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) 
[ 1945.805326][ C0] ip_local_deliver (./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:254) 
[ 1945.805594][ C0] ? __pfx_ip_local_deliver (net/ipv4/ip_input.c:243) 
[ 1945.805882][ C0] ? ip_rcv_finish_core.constprop.0 (./include/linux/skbuff.h:1131 ./include/linux/skbuff.h:1183 net/ipv4/ip_input.c:390) 
[ 1945.806226][ C0] ip_rcv (./include/net/dst.h:461 net/ipv4/ip_input.c:449 ./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:569) 
[ 1945.806451][ C0] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) 
[ 1945.806695][ C0] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 1945.806992][ C0] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) 
[ 1945.807233][ C0] __netif_receive_skb_one_core (net/core/dev.c:5542 (discriminator 4)) 
[ 1945.807544][ C0] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5535) 
[ 1945.807889][ C0] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 1945.808188][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1945.808435][ C0] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:5983) 
[ 1945.808714][ C0] process_backlog (./include/linux/rcupdate.h:779 net/core/dev.c:5985) 
[ 1945.808971][ C0] __napi_poll.constprop.0 (net/core/dev.c:6585) 
[ 1945.809273][ C0] net_rx_action (net/core/dev.c:6653 net/core/dev.c:6786) 
[ 1945.809521][ C0] ? __pfx_net_rx_action (net/core/dev.c:6750) 
[ 1945.809812][ C0] ? __pfx___schedule (kernel/sched/core.c:6608) 
[ 1945.810075][ C0] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) 
[ 1945.810363][ C0] __do_softirq (./arch/x86/include/asm/jump_label.h:27 ./include/linux/jump_label.h:207 ./include/trace/events/irq.h:142 kernel/softirq.c:554) 
[ 1945.810610][ C0] ? __pfx_run_ksoftirqd (kernel/softirq.c:914) 
[ 1945.810893][ C0] run_ksoftirqd (kernel/softirq.c:410 kernel/softirq.c:922 kernel/softirq.c:913) 
[ 1945.811135][ C0] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 1945.811395][ C0] ? __pfx_smpboot_thread_fn (kernel/smpboot.c:107) 
[ 1945.811697][ C0] ? __pfx_smpboot_thread_fn (kernel/smpboot.c:107) 
[ 1945.811980][ C0] kthread (kernel/kthread.c:388) 
[ 1945.812202][ C0] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1945.812448][ C0] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1945.812698][ C0] ? __pfx_kthread (kernel/kthread.c:341) 


Finger prints:
dump_stack_lvl:validate_chain:__lock_acquire:_raw_spin_lock_nested