======================================
| [ 2393.822906][ C2] #6: ffffffffa9f467e0 (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)) 
| [ 2393.823460][ C2] #7: ffffffffa9f467e0 (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) 
| [ 2393.823977][    C2]
| [ 2393.823977][    C2] stack backtrace:
[ 2393.824728][    C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 2393.825350][    C2] Call Trace:
[ 2393.825527][    C2]  <TASK>
[ 2393.825698][ C2] dump_stack_lvl (lib/dump_stack.c:107) 
[ 2393.825955][ C2] validate_chain (kernel/locking/lockdep.c:3859) 
[ 2393.826206][ C2] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) 
[ 2393.826503][ C2] ? 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) 
[ 2393.826754][ C2] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) 
[ 2393.826982][ C2] __lock_acquire (kernel/locking/lockdep.c:5137) 
[ 2393.827241][ C2] ? lock_downgrade (kernel/locking/lockdep.c:5656) 
[ 2393.827518][ C2] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) 
[ 2393.827747][ C2] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[ 2393.828007][ C2] ? tcp_v4_rcv (./include/linux/skbuff.h:1619 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) 
[ 2393.828273][ C2] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 2393.828566][ C2] ? __pfx_sk_filter_trim_cap (net/core/filter.c:130) 
[ 2393.828855][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 2393.829116][    C2]  ? t
DETECTED CRASH, lowering timeout
cp_v4_rcv+0x221e/0x2ac0 
[ 2393.829363][ C2] _raw_spin_lock_nested (kernel/locking/spinlock.c:379) 
[ 2393.829629][ C2] ? tcp_v4_rcv (./include/linux/skbuff.h:1619 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) 
[ 2393.829898][ C2] tcp_v4_rcv (./include/linux/skbuff.h:1619 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) 
[ 2393.830140][ C2] ? __pfx_tcp_v4_rcv (net/ipv4/tcp_ipv4.c:2162) 
[ 2393.830468][ C2] ? __pfx_raw_v4_input (net/ipv4/raw.c:165) 
[ 2393.830733][ C2] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 2393.831033][ C2] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:207 (discriminator 8)) 
[ 2393.831334][ C2] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) 
[ 2393.831612][ C2] ip_local_deliver (./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:254) 
[ 2393.831863][ C2] ? __pfx_ip_local_deliver (net/ipv4/ip_input.c:243) 
[ 2393.832143][ C2] ? tcp_v4_early_demux (./include/linux/skbuff.h:1163 net/ipv4/tcp_ipv4.c:1988) 
[ 2393.832452][ C2] ? ip_rcv_finish_core.constprop.0 (./include/linux/skbuff.h:1131 ./include/linux/skbuff.h:1183 net/ipv4/ip_input.c:390) 
[ 2393.832784][ C2] 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) 
[ 2393.833000][ C2] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) 
[ 2393.833267][ C2] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[ 2393.833541][ C2] ? 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)) 
[ 2393.833841][ C2] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) 
[ 2393.834098][ C2] __netif_receive_skb_one_core (net/core/dev.c:5542 (discriminator 4)) 
[ 2393.834446][ C2] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5535) 
[ 2393.834775][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 2393.835052][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 2393.835300][ C2] ? 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)) 
[ 2393.835610][ C2] netif_receive_skb_internal (net/core/dev.c:5742) 
[ 2393.835913][ C2] ? __pfx_netif_receive_skb_internal (net/core/dev.c:5721) 
[ 2393.836243][ C2] ? __copy_skb_header (./include/net/dst.h:290 net/core/skbuff.c:1420) 
[ 2393.836518][ C2] ? __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:1491 (discriminator 4)) 
[ 2393.836759][ C2] netif_receive_skb (net/core/dev.c:5801) 
[ 2393.837015][ C2] tcf_mirred_to_dev (net/sched/act_mirred.c:249 net/sched/act_mirred.c:324) act_mirred
[ 2393.837351][ C2] ? __pfx_tcf_skbedit_act (net/sched/act_skbedit.c:43) act_skbedit
[ 2393.837688][ C2] tcf_mirred_act (net/sched/act_mirred.c:459 (discriminator 2)) act_mirred
[ 2393.838009][ C2] tcf_action_exec.part.0 (./include/net/tc_wrapper.h:130 net/sched/act_api.c:1100) 
[ 2393.838310][ C2] fl_classify (net/sched/cls_flower.c:345) cls_flower
[ 2393.838628][ C2] ? __pfx_fl_classify (net/sched/cls_flower.c:316) cls_flower
[ 2393.838958][ C2] ? __pfx_check_irq_usage (kernel/locking/lockdep.c:2790) 
[ 2393.839253][ C2] ? __bfs (kernel/locking/lockdep.c:1787) 
[ 2393.839472][ C2] ? __pfx_hlock_conflict (kernel/locking/lockdep.c:2016) 
[ 2393.839751][ C2] ? check_path.constprop.0 (kernel/locking/lockdep.c:2145) 
[ 2393.840045][ C2] ? check_noncircular (kernel/locking/lockdep.c:2172) 
[ 2393.840312][ C2] ? __pfx_check_noncircular (kernel/locking/lockdep.c:2163) 
[ 2393.840603][ C2] ? 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) 
[ 2393.840852][ C2] ? check_prev_add (kernel/locking/lockdep.c:3172) 
[ 2393.841110][ C2] __tcf_classify (./include/net/tc_wrapper.h:197 net/sched/cls_api.c:1734) 
[ 2393.841363][ C2] tcf_classify (net/sched/cls_api.c:1830) 
[ 2393.841627][ C2] ? __pfx_tcf_classify (net/sched/cls_api.c:1779) 
[ 2393.841892][ C2] ? __dev_queue_xmit (./include/linux/bottom_half.h:20 ./include/linux/rcupdate.h:802 net/core/dev.c:4284) 
[ 2393.842165][ C2] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[ 2393.842482][ C2] ? __dev_queue_xmit (./include/linux/bottom_half.h:20 ./include/linux/rcupdate.h:802 net/core/dev.c:4284) 
[ 2393.842746][ C2] tc_run (net/core/dev.c:3945) 
[ 2393.842957][ C2] ? __pfx_tc_run (net/core/dev.c:3929) 
[ 2393.843213][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 2393.843456][ C2] ? __dev_queue_xmit (./include/linux/bottom_half.h:20 ./include/linux/rcupdate.h:802 net/core/dev.c:4284) 
[ 2393.843730][ C2] __dev_queue_xmit (net/core/dev.c:4069 net/core/dev.c:4301) 
[ 2393.844005][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 2393.844266][ C2] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4292 kernel/locking/lockdep.c:4359) 
[ 2393.844603][ C2] ? __pfx___dev_queue_xmit (net/core/dev.c:4268) 
[ 2393.844898][ C2] ? __pfx_vrf_output_direct_finish (./include/linux/skbuff.h:1134) vrf
[ 2393.845266][ C2] ip_finish_output2 (./include/net/neighbour.h:540 net/ipv4/ip_output.c:235) 
[ 2393.845530][ C2] ? __pfx_ip_finish_output2 (net/ipv4/ip_output.c:199) 
[ 2393.845813][ C2] ? __ip_finish_output (./include/linux/skbuff.h:1619 ./include/linux/skbuff.h:4884 net/ipv4/ip_output.c:307 net/ipv4/ip_output.c:295) 
[ 2393.846100][ C2] ip_output (./include/linux/netfilter.h:303 net/ipv4/ip_output.c:433) 
[ 2393.846347][ C2] ? 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) 
[ 2393.846585][ C2] ? __pfx_ip_output (net/ipv4/ip_output.c:427) 
[ 2393.846850][ C2] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 2393.847142][ C2] ? ip_local_out (./include/linux/skbuff.h:1131 ./include/net/dst.h:450 net/ipv4/ip_output.c:129) 
[ 2393.847389][ C2] __ip_queue_xmit (net/ipv4/ip_output.c:535 (discriminator 4)) 
[ 2393.847678][ C2] __tcp_transmit_skb (net/ipv4/tcp_output.c:1462 (discriminator 4)) 
[ 2393.847964][ C2] ? __pfx___tcp_transmit_skb (net/ipv4/tcp_output.c:1283) 
[ 2393.848292][ C2] ? __tcp_send_ack.part.0 (./include/linux/skbuff.h:1296 net/ipv4/tcp_output.c:4206) 
[ 2393.848570][ C2] tcp_rcv_state_process (net/ipv4/tcp_input.c:6874) 
[ 2393.848851][ C2] ? tcp_v4_rcv (./include/linux/skbuff.h:1619 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) 
[ 2393.849122][ C2] ? 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) 
[ 2393.849374][ C2] ? __lock_acquired (kernel/locking/lockdep.c:5992) 
[ 2393.849643][ C2] ? __pfx_tcp_rcv_state_process (net/ipv4/tcp_input.c:6620) 
[ 2393.849946][ C2] ? __pfx___lock_acquired (kernel/locking/lockdep.c:5959) 
[ 2393.850220][ C2] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 2393.850549][ C2] tcp_v4_do_rcv (net/ipv4/tcp_ipv4.c:1929) 
[ 2393.850803][ C2] tcp_v4_rcv (net/ipv4/tcp_ipv4.c:2329) 
[ 2393.851045][ C2] ? __pfx_tcp_v4_rcv (net/ipv4/tcp_ipv4.c:2162) 
[ 2393.851332][ C2] ? __pfx_raw_v4_input (net/ipv4/raw.c:165) 
[ 2393.851600][ C2] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 2393.851916][ C2] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:207 (discriminator 8)) 
[ 2393.852230][ C2] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) 
[ 2393.852524][ C2] ip_local_deliver (./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:254) 
[ 2393.852777][ C2] ? __pfx_ip_local_deliver (net/ipv4/ip_input.c:243) 
[ 2393.853076][ C2] ? tcp_v4_early_demux (./include/linux/skbuff.h:1163 net/ipv4/tcp_ipv4.c:1988) 
[ 2393.853350][ C2] ? ip_rcv_finish_core.constprop.0 (./include/linux/skbuff.h:1131 ./include/linux/skbuff.h:1183 net/ipv4/ip_input.c:390) 
[ 2393.853684][ C2] 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) 
[ 2393.853913][ C2] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) 
[ 2393.854153][ C2] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[ 2393.854461][ C2] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:5983) 
[ 2393.854736][ C2] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) 
[ 2393.854974][ C2] __netif_receive_skb_one_core (net/core/dev.c:5542 (discriminator 4)) 
[ 2393.855287][ C2] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5535) 
[ 2393.855633][ C2] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 2393.855922][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 2393.856168][ C2] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:5983) 
[ 2393.856452][ C2] process_backlog (./include/linux/rcupdate.h:779 net/core/dev.c:5985) 
[ 2393.856698][ C2] __napi_poll.constprop.0 (net/core/dev.c:6613) 
[ 2393.856981][ C2] net_rx_action (net/core/dev.c:6682 net/core/dev.c:6815) 
[ 2393.857244][ C2] ? __pfx_net_rx_action (net/core/dev.c:6779) 
[ 2393.857512][ C2] ? __pfx___schedule (kernel/sched/core.c:6608) 
[ 2393.857768][ C2] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) 
[ 2393.858057][ C2] __do_softirq (kernel/softirq.c:553) 
[ 2393.858316][ C2] ? __pfx_run_ksoftirqd (kernel/softirq.c:914) 
[ 2393.858600][ C2] run_ksoftirqd (kernel/softirq.c:410 kernel/softirq.c:922 kernel/softirq.c:913) 
[ 2393.858843][ C2] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 2393.859114][ C2] ? __pfx_smpboot_thread_fn (kernel/smpboot.c:107) 
[ 2393.859396][ C2] ? __pfx_smpboot_thread_fn (kernel/smpboot.c:107) 
[ 2393.859684][ C2] kthread (kernel/kthread.c:388) 
[ 2393.859912][ C2] ? __pfx_kthread (kernel/kthread.c:341) 
[ 2393.860152][ C2] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 2393.860385][ C2] ? __pfx_kthread (kernel/kthread.c:341) 


Finger prints:
dump_stack_lvl:validate_chain:__lock_acquire:_raw_spin_lock_nested