======================================
| [ 1118.220584] #6: ffffffffb4d678c0 (rcu_read_lock){....}-{1:2}, at: netif_receive_skb (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:5729 net/core/dev.c:5801) 
| [ 1118.221264] #7: ffffffffb4d678c0 (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) 
| [ 1118.221791]
| [ 1118.221791] stack backtrace:
[ 1118.222436] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1118.223045] Call Trace:
[ 1118.223186]  <TASK>
[ 1118.223318] dump_stack_lvl (lib/dump_stack.c:108) 
[ 1118.223545] __lock_acquire (kernel/locking/lockdep.c:5138) 
[ 1118.223778] ? sk_filter_trim_cap (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/filter.c:151) 
[ 1118.224037] lock_acquire (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756 kernel/locking/lockdep.c:5719) 
[ 1118.224234] ? tcp_v4_rcv (./include/linux/skbuff.h:1624 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) 
[ 1118.224448] ? sk_filter_trim_cap (net/core/filter.c:165) 
[ 1118.224715] _raw_spin_lock_nested (kernel/locking/spinlock.c:379) 
[ 1118.224967] ? tcp_v4_rcv (./include/linux/skbuff.h:1624 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) 
[ 1118.225180] tcp_v4_rcv (./include/linux/skbuff.h:1624 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) 
[ 1118.225372] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:205 (discriminator 1)) 
[ 1118.225633] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) 
[ 1118.225893] __netif_receive_skb_one_core (net/core/dev.c:5542 (discriminator 4)) 
[ 1118.226161] netif_receive_skb (net/core/dev.c:5742 net/core/dev.c:5801) 
[ 1118.226389] tcf_mirred_to_dev (net/sched/act_mirred.c:327) act_mirred
[ 1118.226691] tcf_mirred_act (net/sched/act_mirred.c:459 (discriminator 2)) act_mirred
[ 1118.226966] ? tcf_skbedit_act (net/sched/act_skbedit.c:51 (discriminator 3)) act_skbedit
[ 1118.227266] tcf_action_exec (net/sched/act_api.c:1101 net/sched/act_api.c:1074) 
[ 1118.227484] fl_classify (net/sched/cls_flower.c:345) cls_flower
[ 1118.227745] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:24) 
[ 1118.227980] ? unwind_next_frame (arch/x86/kernel/unwind_orc.c:403 arch/x86/kernel/unwind_orc.c:653) 
[ 1118.228212] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
[ 1118.228443] ? unwind_next_frame (arch/x86/kernel/unwind_orc.c:202 arch/x86/kernel/unwind_orc.c:494) 
[ 1118.228706] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 1118.229005] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) 
[ 1118.229243] ? __bfs (kernel/locking/lockdep.c:1787) 
[ 1118.229427] ? check_irq_usage (kernel/locking/lockdep.c:2823) 
[ 1118.229664] ? check_path.constprop.0 (kernel/locking/lockdep.c:2145) 
[ 1118.229954] ? check_noncircular (kernel/locking/lockdep.c:2172) 
[ 1118.230183] ? save_trace (kernel/locking/lockdep.c:584) 
[ 1118.230388] ? __lock_acquire (kernel/locking/lockdep.c:5133 (discriminator 1)) 
[ 1118.230636] tcf_classify (./include/net/tc_wrapper.h:197 net/sched/cls_api.c:1734 net/sched/cls_api.c:1830) 
[ 1118.230847] tc_run (net/core/dev.c:3945) 
[ 1118.231035] __dev_queue_xmit (net/core/dev.c:4069 net/core/dev.c:4301) 
[ 1118.231263] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 1118.231496] ip_finish_output2 (./include/linux/netdevice.h:3171 ./include/net/neighbour.h:526 ./include/net/neighbour.h:540 net/ipv4/ip_output.c:235) 
[ 1118.231736] ? __ip_queue_xmit (net/ipv4/ip_output.c:535) 
[ 1118.231964] __ip_queue_xmit (net/ipv4/ip_output.c:535) 
[ 1118.232179] __tcp_transmit_skb (net/ipv4/tcp_output.c:1462 (discriminator 4)) 
[ 1118.232415] tcp_write_xmit (net/ipv4/tcp_output.c:2792) 
[ 1118.232709] __tcp_push_pending_frames (net/ipv4/tcp_output.c:2977) 
[ 1118.232992] tcp_rcv_state_process (net/ipv4/tcp_input.c:5654 net/ipv4/tcp_input.c:6870) 
[ 1118.233256] ? tcp_v4_rcv (./include/linux/skbuff.h:1624 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) 
[ 1118.233465] ? tcp_v4_do_rcv (net/ipv4/tcp_ipv4.c:1929) 
[ 1118.233685] tcp_v4_do_rcv (net/ipv4/tcp_ipv4.c:1929) 
[ 1118.233907] tcp_v4_rcv (net/ipv4/tcp_ipv4.c:2329) 
[ 1118.234101] ? process_backlog (net/core/dev.c:5978 (discriminator 2)) 
[ 1118.234323] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:205 (discriminator 1)) 
[ 1118.234587] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) 
[ 1118.234838] __netif_receive_skb_one_core (net/core/dev.c:5542 (discriminator 4)) 
[ 1118.235111] process_backlog (./include/linux/rcupdate.h:779 net/core/dev.c:5985) 
[ 1118.235331] __napi_poll.constprop.0 (net/core/dev.c:6584) 
[ 1118.235595] net_rx_action (net/core/dev.c:6655 net/core/dev.c:6786) 
[ 1118.235804] __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) 
[ 1118.236015] ? __pfx_smpboot_thread_fn (kernel/smpboot.c:107) 
[ 1118.236271] run_ksoftirqd (kernel/softirq.c:410 kernel/softirq.c:922 kernel/softirq.c:913) 
[ 1118.236472] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 1118.236709] kthread (kernel/kthread.c:388) 
[ 1118.236890] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1118.237110] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1118.237312] ? __pfx_kthread (kernel/kthread.c:341) 


Finger prints:
dump_stack_lvl:__lock_acquire:lock_acquire:_raw_spin_lock_nested