======================================
| [ 1277.465493][ C0] #6: ffffffffac1447e0 (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)) 
| [ 1277.466026][ C0] #7: ffffffffac1447e0 (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) 
| [ 1277.466548][    C0]
| [ 1277.466548][    C0] stack backtrace:
[ 1277.467266][    C0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1277.467888][    C0] Call Trace:
[ 1277.468065][    C0]  <TASK>
[ 1277.468228][ C0] dump_stack_lvl (lib/dump_stack.c:107) 
[ 1277.468473][ C0] validate_chain (kernel/locking/lockdep.c:3859) 
[ 1277.468728][ C0] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) 
[ 1277.468997][ 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) 
[ 1277.469237][ C0] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) 
[ 1277.469463][ C0] __lock_acquire (kernel/locking/lockdep.c:5137) 
[ 1277.469710][ C0] ? lock_downgrade (kernel/locking/lockdep.c:5656) 
[ 1277.469964][ C0] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) 
[ 1277.470201][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[ 1277.470468][ C0] ? tcp_v4_rcv (./include/linux/skbuff.h:1624 ./include/net/tcp.h:2512 net/ipv4/tcp_ipv4.c:2327) 
[ 1277.470717][ C0] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 1277.471014][ C0] ? __pfx_sk_filter_trim_cap (net/core/filter.c:130) 
[ 1277.471301][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1277.471552][ C0] ? tcp_v4_rcv (./include/linux/skbuff.h:1624 ./include/net/tcp.h:2512 net/ipv4/tcp_ipv4.c:2327) 
[ 1277.471802][ C0] _raw_spin_lock_nested (kernel/locking/spinlock.c:379) 
[ 1277.472073][ C0] ? tcp_v4_rcv (./include/linux/skbuff.h:1624 ./include/net/tcp.h:2512 net/ipv4/tcp_ipv4.c:2327) 
[ 1277.472320][ C0] tcp_v4_rcv (./include/linux/skbuff.h:1624 ./include/net/tcp.h:2512 net/ipv4/tcp_ipv4.c:2327) 
[ 1277.472567][ C0] ? __pfx_tcp_v4_rcv (net/ipv4/tcp_ipv4.c:2163) 
[ 1277.472822][ C0] ? __pfx_raw_v4_input (net/ipv4/raw.c:165) 
[ 1277.473090][ C0] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 1277.473390][ C0] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:207 (discriminator 8)) 
[ 1277.473676][ C0] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) 
[ 1277.473959][ C0] ip_local_deliver (./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:254) 
[ 1277.474217][ C0] ? __pfx_ip_local_deliver (net/ipv4/ip_input.c:243) 
[ 1277.474492][ C0] ? ip_rcv_finish_core.constprop.0 (./include/linux/skbuff.h:1136 ./include/linux/skbuff.h:1188 net/ipv4/ip_input.c:390) 
[ 1277.474822][ C0] 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) 
[ 1277.475038][ C0] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) 
[ 1277.475277][ C0] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[ 1277.475553][ 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)) 
[ 1277.475859][ C0] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) 
[ 1277.476101][ C0] __netif_receive_skb_one_core (net/core/dev.c:5542 (discriminator 4)) 
[ 1277.476408][ C0] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5535) 
[ 1277.476745][ C0] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 1277.476998][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1277.477250][ 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)) 
[ 1277.477547][ C0] netif_receive_skb_internal (net/core/dev.c:5742) 
[ 1277.477837][ C0] ? __pfx_netif_receive_skb_internal (net/core/dev.c:5721) 
[ 1277.478167][ C0] ? __copy_skb_header (./include/net/dst.h:290 net/core/skbuff.c:1429) 
[ 1277.478426][ 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:1500 (discriminator 4)) 
[ 1277.478665][ C0] netif_receive_skb (net/core/dev.c:5801) 
[ 1277.478925][ C0] tcf_mirred_to_dev (net/sched/act_mirred.c:251 net/sched/act_mirred.c:326) act_mirred
[ 1277.479244][ C0] ? __pfx_tcf_skbedit_act (net/sched/act_skbedit.c:43) act_skbedit
[ 1277.479582][ C0] tcf_mirred_act (net/sched/act_mirred.c:461 (discriminator 2)) act_mirred
[ 1277.479887][ C0] tcf_action_exec.part.0 (./include/net/tc_wrapper.h:130 net/sched/act_api.c:1100) 
[ 1277.480175][ C0] fl_classify (net/sched/cls_flower.c:345) cls_flower
[ 1277.480471][ C0] ? kernel_text_address (kernel/extable.c:99) 
[ 1277.480746][ C0] ? __pfx_fl_classify (net/sched/cls_flower.c:316) cls_flower
[ 1277.481062][ C0] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) 
[ 1277.481327][ C0] ? check_irq_usage (kernel/locking/lockdep.c:2823) 
[ 1277.481580][ C0] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 1277.481833][ C0] ? __pfx_check_irq_usage (kernel/locking/lockdep.c:2790) 
[ 1277.482112][ C0] ? __bfs (kernel/locking/lockdep.c:1787) 
[ 1277.482329][ C0] ? __pfx_hlock_conflict (kernel/locking/lockdep.c:2016) 
[ 1277.482605][ C0] ? __bfs (kernel/locking/lockdep.c:1787) 
[ 1277.482824][ C0] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) 
[ 1277.483090][ C0] ? check_path.constprop.0 (kernel/locking/lockdep.c:2145) 
[ 1277.483369][ C0] ? check_noncircular (kernel/locking/lockdep.c:2172) 
[ 1277.483640][ C0] ? __pfx_check_noncircular (kernel/locking/lockdep.c:2163) 
[ 1277.483935][ C0] __tcf_classify (./include/net/tc_wrapper.h:197 net/sched/cls_api.c:1734) 
[ 1277.484186][ C0] tcf_classify (net/sched/cls_api.c:1830) 
[ 1277.484420][ C0] ? __pfx_tcf_classify (net/sched/cls_api.c:1779) 
[ 1277.484682][ C0] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[ 1277.484957][ C0] ? __dev_queue_xmit (./include/linux/bottom_half.h:20 ./include/linux/rcupdate.h:802 net/core/dev.c:4284) 
[ 1277.485227][ C0] tc_run (net/core/dev.c:3945) 
[ 1277.485443][ C0] ? __pfx_tc_run (net/core/dev.c:3929) 
[ 1277.485683][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1277.485939][ C0] ? __dev_queue_xmit (./include/linux/bottom_half.h:20 ./include/linux/rcupdate.h:802 net/core/dev.c:4284) 
[ 1277.486207][ C0] __dev_queue_xmit (net/core/dev.c:4069 net/core/dev.c:4301) 
[ 1277.486470][ 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) 
[ 1277.486706][ C0] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) 
[ 1277.486941][ C0] ? __pfx___dev_queue_xmit (net/core/dev.c:4268) 
[ 1277.487218][ C0] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4292 kernel/locking/lockdep.c:4359) 
[ 1277.487560][ C0] ? neigh_hh_output (./include/linux/seqlock.h:74 ./include/linux/seqlock.h:772 ./include/net/neighbour.h:496) 
[ 1277.487822][ C0] ip_finish_output2 (./include/net/neighbour.h:540 net/ipv4/ip_output.c:235) 
[ 1277.488088][ C0] ? __pfx_ip_finish_output2 (net/ipv4/ip_output.c:199) 
[ 1277.488372][ C0] ? __ip_finish_output (net/ipv4/ip_output.c:256 net/ipv4/ip_output.c:308 net/ipv4/ip_output.c:295) 
[ 1277.488646][ C0] ip_output (./include/linux/netfilter.h:303 net/ipv4/ip_output.c:433) 
[ 1277.488869][ C0] ? __pfx_ip_output (net/ipv4/ip_output.c:427) 
[ 1277.489124][ C0] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 1277.489415][ C0] ? ip_local_out (./include/linux/skbuff.h:1136 ./include/net/dst.h:450 net/ipv4/ip_output.c:129) 
[ 1277.489665][ C0] __ip_queue_xmit (net/ipv4/ip_output.c:535 (discriminator 4)) 
[ 1277.489919][ 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:1500 (discriminator 4)) 
[ 1277.490167][ C0] __tcp_transmit_skb (net/ipv4/tcp_output.c:1462 (discriminator 4)) 
[ 1277.490436][ C0] ? __pfx___tcp_transmit_skb (net/ipv4/tcp_output.c:1283) 
[ 1277.490720][ 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) 
[ 1277.491036][ C0] tcp_write_xmit (net/ipv4/tcp_output.c:2792) 
[ 1277.491288][ C0] ? ipv4_mtu (./include/net/net_namespace.h:383 ./include/linux/netdevice.h:2651 ./include/net/ip.h:465 net/ipv4/route.c:1326) 
[ 1277.491511][ C0] ? __pfx_tcp_write_xmit (net/ipv4/tcp_output.c:2702) 
[ 1277.491781][ C0] ? __pfx_tcp_current_mss (net/ipv4/tcp_output.c:1853) 
[ 1277.492063][ C0] __tcp_push_pending_frames (net/ipv4/tcp_output.c:2977) 
[ 1277.492355][ C0] tcp_rcv_state_process (net/ipv4/tcp_input.c:5654 net/ipv4/tcp_input.c:6881) 
[ 1277.492644][ C0] ? __pfx_tcp_rcv_state_process (net/ipv4/tcp_input.c:6621) 
[ 1277.492947][ C0] ? find_held_lock (kernel/locking/lockdep.c:5244) 
[ 1277.493201][ C0] ? tcp_v4_rcv (./include/linux/skbuff.h:1624 ./include/net/tcp.h:2512 net/ipv4/tcp_ipv4.c:2327) 
[ 1277.493441][ 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) 
[ 1277.493678][ C0] tcp_v4_do_rcv (net/ipv4/tcp_ipv4.c:1930) 
[ 1277.493926][ C0] ? __pfx_tcp_v4_do_rcv (net/ipv4/tcp_ipv4.c:1887) 
[ 1277.494195][ C0] tcp_v4_rcv (net/ipv4/tcp_ipv4.c:2330) 
[ 1277.494438][ C0] ? __pfx_tcp_v4_rcv (net/ipv4/tcp_ipv4.c:2163) 
[ 1277.494689][ C0] ? __pfx_raw_v4_input (net/ipv4/raw.c:165) 
[ 1277.494958][ C0] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 1277.495254][ C0] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:207 (discriminator 8)) 
[ 1277.495538][ C0] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) 
[ 1277.495822][ C0] ip_local_deliver (./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:254) 
[ 1277.496083][ C0] ? __pfx_ip_local_deliver (net/ipv4/ip_input.c:243) 
[ 1277.496364][ C0] ? ip_rcv_finish_core.constprop.0 (./include/linux/skbuff.h:1136 ./include/linux/skbuff.h:1188 net/ipv4/ip_input.c:390) 
[ 1277.496695][ C0] 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) 
[ 1277.496905][ C0] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) 
[ 1277.497150][ C0] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[ 1277.497419][ C0] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:5983) 
[ 1277.497685][ C0] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) 
[ 1277.497925][ C0] __netif_receive_skb_one_core (net/core/dev.c:5542 (discriminator 4)) 
[ 1277.498237][ C0] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5535) 
[ 1277.498564][ C0] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 1277.498859][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1277.499112][ C0] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:5983) 
[ 1277.499373][ C0] process_backlog (./include/linux/rcupdate.h:779 net/core/dev.c:5985) 
[ 1277.499622][ C0] __napi_poll.constprop.0 (net/core/dev.c:6584) 
[ 1277.499905][ C0] net_rx_action (net/core/dev.c:6653 net/core/dev.c:6786) 
[ 1277.500152][ C0] ? __pfx_net_rx_action (net/core/dev.c:6750) 
[ 1277.500417][ C0] ? __pfx___schedule (kernel/sched/core.c:6608) 
[ 1277.500675][ C0] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) 
[ 1277.500948][ C0] __do_softirq (kernel/softirq.c:553) 
[ 1277.501191][ C0] ? __pfx_run_ksoftirqd (kernel/softirq.c:914) 
[ 1277.501456][ C0] run_ksoftirqd (kernel/softirq.c:410 kernel/softirq.c:922 kernel/softirq.c:913) 
[ 1277.501690][ C0] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 1277.501956][ C0] ? __pfx_smpboot_thread_fn (kernel/smpboot.c:107) 
[ 1277.502242][ C0] ? __pfx_smpboot_thread_fn (kernel/smpboot.c:107) 
[ 1277.502528][ C0] kthread (kernel/kthread.c:388) 
[ 1277.502748][ C0] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1277.502997][ C0] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 1277.503231][ C0] ? __pfx_kthread (kernel/kthread.c:341) 


Finger prints:
dump_stack_lvl:validate_chain:__lock_acquire:_raw_spin_lock_nested