======================================
| [   16.098025] #6: ffffffff915678c0 (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) 
| [   16.098506] #7: ffffffff915678c0 (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) 
| [   16.099020]
| [   16.099020] stack backtrace:
[   16.099679] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   16.100312] Call Trace:
[   16.100458]  <TASK>
[   16.100590] dump_stack_lvl (lib/dump_stack.c:108) 
[   16.100813] __lock_acquire (kernel/locking/lockdep.c:5138) 
[   16.101052] ? sk_filter_trim_cap (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/filter.c:151) 
[   16.101310] lock_acquire (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756 kernel/locking/lockdep.c:5719) 
[   16.101519] ? tcp_v4_rcv (./include/linux/skbuff.h:1624 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) 
[   16.101752] ? sk_filter_trim_cap (net/core/filter.c:165) 
[   16.101996] _raw_spin_lock_nested (kernel/locking/spinlock.c:379) 
[   16.102249] ? tcp_v4_rcv (./include/linux/skbuff.h:1624 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) 
[   16.102486] tcp_v4_rcv (./include/linux/skbuff.h:1624 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) 
[   16.102681] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:205 (discriminator 1)) 
[   16.102943] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) 
[   16.103216] __netif_receive_skb_one_core (net/core/dev.c:5542 (discriminator 4)) 
[   16.103486] netif_receive_skb (net/core/dev.c:5742 net/core/dev.c:5801) 
[   16.103722] tcf_mirred_to_dev (net/sched/act_mirred.c:327) act_mirred
[   16.104023] tcf_mirred_act (net/sched/act_mirred.c:459 (discriminator 2)) act_mirred
[   16.104291] ? tcf_skbedit_act (net/sched/act_skbedit.c:51 (discriminator 3)) act_skbedit
[   16.104598] tcf_action_exec (net/sched/act_api.c:1101 net/sched/act_api.c:1074) 
[   16.104835] fl_classify (net/sched/cls_flower.c:345) cls_flower
[   16.105109] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) 
[   16.105352] ? __bfs (kernel/locking/lockdep.c:1787) 
[   16.105532] ? check_irq_usage (kernel/locking/lockdep.c:2823) 
[   16.105774] ? check_path.constprop.0 (kernel/locking/lockdep.c:2145) 
[   16.106052] ? check_noncircular (kernel/locking/lockdep.c:2172) 
[   16.106281] ? find_held_lock (kernel/locking/lockdep.c:5244) 
[   16.106508] ? __lock_acquire (kernel/locking/lockdep.c:5133 (discriminator 1)) 
[   16.106757] tcf_classify (./include/net/tc_wrapper.h:197 net/sched/cls_api.c:1734 net/sched/cls_api.c:1830) 
[   16.106979] tc_run (net/core/dev.c:3945) 
[   16.107173] __dev_queue_xmit (net/core/dev.c:4069 net/core/dev.c:4301) 
[   16.107417] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[   16.107650] ? eth_header (net/ethernet/eth.c:85) 
[   16.107849] ip_finish_output2 (./include/net/neighbour.h:542 net/ipv4/ip_output.c:235) 
[   16.108089] ? __ip_queue_xmit (net/ipv4/ip_output.c:535) 
[   16.108336] __ip_queue_xmit (net/ipv4/ip_output.c:535) 
[   16.108552] __tcp_transmit_skb (net/ipv4/tcp_output.c:1462 (discriminator 4)) 
[   16.108798] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[   16.109033] tcp_write_xmit (net/ipv4/tcp_output.c:2792) 
[   16.109251] ? tcp_current_mss (./include/net/dst.h:216 net/ipv4/tcp_output.c:1864) 
[   16.109499] __tcp_push_pending_frames (net/ipv4/tcp_output.c:2977) 
[   16.109767] tcp_rcv_state_process (net/ipv4/tcp_input.c:5654 net/ipv4/tcp_input.c:6870) 
[   16.110019] ? tcp_v4_rcv (./include/linux/skbuff.h:1624 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) 
[   16.110239] ? tcp_v4_do_rcv (net/ipv4/tcp_ipv4.c:1929) 
[   16.110467] tcp_v4_do_rcv (net/ipv4/tcp_ipv4.c:1929) 
[   16.110669] tcp_v4_rcv (net/ipv4/tcp_ipv4.c:2329) 
[   16.110876] ? process_backlog (net/core/dev.c:5978 (discriminator 2)) 
[   16.111116] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:205 (discriminator 1)) 
[   16.111367] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) 
[   16.111633] __netif_receive_skb_one_core (net/core/dev.c:5542 (discriminator 4)) 
[   16.111926] process_backlog (./include/linux/rcupdate.h:779 net/core/dev.c:5985) 
[   16.112144] __napi_poll.constprop.0 (net/core/dev.c:6584) 
[   16.112405] net_rx_action (net/core/dev.c:6655 net/core/dev.c:6786) 
[   16.112634] __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) 
[   16.112853] ? __pfx_smpboot_thread_fn (kernel/smpboot.c:107) 
[   16.113120] run_ksoftirqd (kernel/softirq.c:410 kernel/softirq.c:922 kernel/softirq.c:913) 
[   16.113324] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[   16.113555] kthread (kernel/kthread.c:388) 
[   16.113756] ? __pfx_kthread (kernel/kthread.c:341) 
[   16.113966] ret_from_fork (arch/x86/kernel/process.c:153) 
[   16.114184] ? __pfx_kthread (kernel/kthread.c:341) 


Finger prints:
dump_stack_lvl:__lock_acquire:lock_acquire:_raw_spin_lock_nested