======================================
| [  866.357838] #6: ffffffff9a1678c0 (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) 
| [  866.358340] #7: ffffffff9a1678c0 (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) 
| [  866.358843]
| [  866.358843] stack backtrace:
[  866.359494] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  866.360112] Call Trace:
[  866.360254]  <TASK>
[  866.360377] dump_stack_lvl (lib/dump_stack.c:108) 
[  866.360599] __lock_acquire (kernel/locking/lockdep.c:5138) 
[  866.360843] ? sk_filter_trim_cap (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/filter.c:151) 
[  866.361079] lock_acquire (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756 kernel/locking/lockdep.c:5719) 
[  866.361303] ? tcp_v4_rcv (./include/linux/skbuff.h:1619 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) 
[  866.361507] ? sk_filter_trim_cap (net/core/filter.c:165) 
[  866.361767] _raw_spin_lock_nested (kernel/locking/spinlock.c:379) 
[  866.361999] ? tcp_v4_rcv (./include/linux/skbuff.h:1619 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) 
[  866.362221] tcp_v4_rcv (./include/linux/skbuff.h:1619 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) 
[  866.362411] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:205 (discriminator 1)) 
[  866.362715] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) 
[  866.362995] __netif_receive_skb_one_core (net/core/dev.c:5542 (discriminator 4)) 
[  866.363329] netif_receive_skb (net/core/dev.c:5742 net/core/dev.c:5801) 
[  866.363586] tcf_mirred_to_dev (net/sched/act_mirred.c:327) act_mirred
[  866.363898] tcf_mirred_act (net/sched/act_mirred.c:459 (discriminator 2)) act_mirred
[  866.364160] ? tcf_skbedit_act (net/sched/act_skbedit.c:51 (discriminator 3)) act_skbedit
[  866.364470] tcf_action_exec (net/sched/act_api.c:1101 net/sched/act_api.c:1074) 
[  866.364684] fl_classify (net/sched/cls_flower.c:345) cls_flower
[  866.364980] ? fl_mask_lookup (net/sched/cls_flower.c:296) cls_flower
[  866.365259] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) 
[  866.365508] ? __bfs (kernel/locking/lockdep.c:1787) 
[  866.365684] ? check_irq_usage (kernel/locking/lockdep.c:2823) 
[  866.365932] ? __lock_acquire (kernel/locking/lockdep.c:5133 (discriminator 1)) 
[  866.366154] ? check_path.constprop.0 (kernel/locking/lockdep.c:2145) 
[  866.366430] ? check_noncircular (kernel/locking/lockdep.c:2172) 
[  866.366656] ? __lock_acquire (kernel/locking/lockdep.c:5133 (discriminator 1)) 
[  866.366916] tcf_classify (./include/net/tc_wrapper.h:197 net/sched/cls_api.c:1734 net/sched/cls_api.c:1830) 
[  866.367115] tc_run (net/core/dev.c:3945) 
[  866.367303] __dev_queue_xmit (net/core/dev.c:4069 net/core/dev.c:4301) 
[  866.367529] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[  866.367772] ip_finish_output2 (./include/linux/netdevice.h:3171 ./include/net/neighbour.h:526 ./include/net/neighbour.h:540 net/ipv4/ip_output.c:235) 
[  866.367991] ? __ip_queue_xmit (net/ipv4/ip_output.c:535) 
[  866.368244] __ip_queue_xmit (net/ipv4/ip_output.c:535) 
[  866.368484] __tcp_transmit_skb (net/ipv4/tcp_output.c:1462 (discriminator 4)) 
[  866.368752] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[  866.368965] tcp_write_xmit (net/ipv4/tcp_output.c:2792) 
[  866.369205] __tcp_push_pending_frames (net/ipv4/tcp_output.c:2977) 
[  866.369489] tcp_rcv_state_process (net/ipv4/tcp_input.c:5654 net/ipv4/tcp_input.c:6870) 
[  866.369754] ? tcp_v4_rcv (./include/linux/skbuff.h:1619 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) 
[  866.369957] ? tcp_v4_do_rcv (net/ipv4/tcp_ipv4.c:1929) 
[  866.370161] tcp_v4_do_rcv (net/ipv4/tcp_ipv4.c:1929) 
[  866.370385] tcp_v4_rcv (net/ipv4/tcp_ipv4.c:2329) 
[  866.370610] ? process_backlog (net/core/dev.c:5978 (discriminator 2)) 
[  866.370848] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:205 (discriminator 1)) 
[  866.371103] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) 
[  866.371370] __netif_receive_skb_one_core (net/core/dev.c:5542 (discriminator 4)) 
[  866.371672] process_backlog (./include/linux/rcupdate.h:779 net/core/dev.c:5985) 
[  866.371904] __napi_poll.constprop.0 (net/core/dev.c:6584) 
[  866.372148] net_rx_action (net/core/dev.c:6655 net/core/dev.c:6786) 
[  866.372392] __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) 
[  866.372618] ? __pfx_smpboot_thread_fn (kernel/smpboot.c:107) 
[  866.372906] run_ksoftirqd (kernel/softirq.c:410 kernel/softirq.c:922 kernel/softirq.c:913) 
[  866.373103] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[  866.373353] kthread (kernel/kthread.c:388) 
[  866.373547] ? __pfx_kthread (kernel/kthread.c:341) 
[  866.373763] ret_from_fork (arch/x86/kernel/process.c:153) 
[  866.373979] ? __pfx_kthread (kernel/kthread.c:341) 


Finger prints:
dump_stack_lvl:__lock_acquire:lock_acquire:_raw_spin_lock_nested