======================================
| [ 1044.721930] #6: ffffffffa5b678c0 (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) 
| [ 1044.722407] #7: ffffffffa5b678c0 (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) 
| [ 1044.722902]
| [ 1044.722902] stack backtrace:
[ 1044.723556] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1044.724168] Call Trace:
[ 1044.724311]  <TASK>
[ 1044.724454] dump_stack_lvl (lib/dump_stack.c:108) 
[ 1044.724661] __lock_acquire (kernel/locking/lockdep.c:5138) 
[ 1044.724882] ? sk_filter_trim_cap (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/filter.c:151) 
[ 1044.725138] lock_acquire (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756 kernel/locking/lockdep.c:5719) 
[ 1044.725334] ? tcp_v4_rcv (./include/linux/skbuff.h:1624 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) 
[ 1044.725549] ? sk_filter_trim_cap (net/core/filter.c:165) 
[ 1044.725805] _raw_spin_lock_nested (kernel/locking/spinlock.c:379) 
[ 1044.726048] ? tcp_v4_rcv (./include/linux/skbuff.h:1624 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) 
[ 1044.726255] tcp_v4_rcv (./include/linux/skbuff.h:1624 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) 
[ 1044.726465] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:205 (discriminator 1)) 
[ 1044.726717] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) 
[ 1044.726968] __netif_receive_skb_one_core (net/core/dev.c:5542 (discriminator 4)) 
[ 1044.727254] netif_receive_skb (net/core/dev.c:5742 net/core/dev.c:5801) 
[ 1044.727495] tcf_mirred_to_dev (net/sched/act_mirred.c:327) act_mirred
[ 1044.727785] tcf_mirred_act (net/sched/act_mirred.c:459 (discriminator 2)) act_mirred
[ 1044.728066] ? tcf_skbedit_act (net/sched/act_skbedit.c:51 (discriminator 3)) act_skbedit
[ 1044.728363] ? print_shortest_lock_dependencies_backwards (kernel/locking/lockdep.c:2492) 
[ 1044.728713] tcf_action_exec (net/sched/act_api.c:1101 net/sched/act_api.c:1074) 
[ 1044.728934] fl_classify (net/sched/cls_flower.c:345) cls_flower
[ 1044.729213] ? fl_mask_lookup (net/sched/cls_flower.c:296) cls_flower
[ 1044.729498] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) 
[ 1044.729740] ? __bfs (kernel/locking/lockdep.c:1787) 
[ 1044.729923] ? check_irq_usage (kernel/locking/lockdep.c:2823) 
[ 1044.730154] ? check_path.constprop.0 (kernel/locking/lockdep.c:2145) 
[ 1044.730412] ? check_noncircular (kernel/locking/lockdep.c:2172) 
[ 1044.730651] ? lock_release (kernel/locking/lockdep.c:5430 kernel/locking/lockdep.c:5774) 
[ 1044.730872] ? __lock_acquire (kernel/locking/lockdep.c:5133 (discriminator 1)) 
[ 1044.731115] tcf_classify (./include/net/tc_wrapper.h:197 net/sched/cls_api.c:1734 net/sched/cls_api.c:1830) 
[ 1044.731319] tc_run (net/core/dev.c:3945) 
[ 1044.731510] __dev_queue_xmit (net/core/dev.c:4069 net/core/dev.c:4301) 
[ 1044.731742] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 1044.731962] ip_finish_output2 (./include/linux/netdevice.h:3171 ./include/net/neighbour.h:526 ./include/net/neighbour.h:540 net/ipv4/ip_output.c:235) 
[ 1044.732205] ? __ip_queue_xmit (net/ipv4/ip_output.c:535) 
[ 1044.732450] __ip_queue_xmit (net/ipv4/ip_output.c:535) 
[ 1044.732687] __tcp_transmit_skb (net/ipv4/tcp_output.c:1462 (discriminator 4)) 
[ 1044.732917] tcp_write_xmit (net/ipv4/tcp_output.c:2792) 
[ 1044.733144] __tcp_push_pending_frames (net/ipv4/tcp_output.c:2977) 
[ 1044.733396] tcp_rcv_state_process (net/ipv4/tcp_input.c:5654 net/ipv4/tcp_input.c:6870) 
[ 1044.733664] ? tcp_v4_rcv (./include/linux/skbuff.h:1624 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) 
[ 1044.733879] ? tcp_v4_do_rcv (net/ipv4/tcp_ipv4.c:1929) 
[ 1044.734095] tcp_v4_do_rcv (net/ipv4/tcp_ipv4.c:1929) 
[ 1044.734309] tcp_v4_rcv (net/ipv4/tcp_ipv4.c:2329) 
[ 1044.734511] ? process_backlog (net/core/dev.c:5978 (discriminator 2)) 
[ 1044.734740] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:205 (discriminator 1)) 
[ 1044.735019] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) 
[ 1044.735279] __netif_receive_skb_one_core (net/core/dev.c:5542 (discriminator 4)) 
[ 1044.735545] process_backlog (./include/linux/rcupdate.h:779 net/core/dev.c:5985) 
[ 1044.735783] __napi_poll.constprop.0 (net/core/dev.c:6584) 
[ 1044.736038] net_rx_action (net/core/dev.c:6655 net/core/dev.c:6786) 
[ 1044.736260] __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) 
[ 1044.736461] ? __pfx_smpboot_thread_fn (kernel/smpboot.c:107) 
[ 1044.736728] run_ksoftirqd (kernel/softirq.c:410 kernel/softirq.c:922 kernel/softirq.c:913) 
[ 1044.736963] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 1044.737190] kthread (kernel/kthread.c:388) 
[ 1044.737380] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1044.737606] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1044.737809] ? __pfx_kthread (kernel/kthread.c:341) 


Finger prints:
dump_stack_lvl:__lock_acquire:lock_acquire:_raw_spin_lock_nested