======================================
| [ 34.857335][ C0] ret_from_fork_asm (arch/x86/entry/entry_64.S:256)
| [ 34.857643][ C0]
| [ 34.857737][ C0]
| [ 34.857737][ C0] stack backtrace:
[ 34.858223][ C0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 34.858628][ C0] Workqueue: ipv6_addrconf addrconf_dad_work
[ 34.858856][ C0] Call Trace:
[ 34.858994][ C0]
[ 34.859086][ C0] dump_stack_lvl (lib/dump_stack.c:117)
[ 34.859282][ C0] print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024)
[ 34.859507][ C0] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:256)
[ 34.859686][ C0] ? __pfx_print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024)
[ 34.859908][ C0] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264)
[ 34.860209][ C0] ? __pfx_usage_match (kernel/locking/lockdep.c:2256)
[ 34.860385][ C0] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:24)
[ 34.860566][ C0] mark_lock_irq (kernel/locking/lockdep.c:4244)
[ 34.860746][ C0] ? __pfx_mark_lock_irq (kernel/locking/lockdep.c:4207)
[ 34.861046][ C0] ? stack_trace_save (kernel/stacktrace.c:123)
[ 34.861236][ C0] ? save_trace (kernel/locking/lockdep.c:586)
[ 34.861414][ C0] mark_lock (kernel/locking/lockdep.c:4678)
[ 34.861549][ C0] mark_usage (kernel/locking/lockdep.c:4567)
[ 34.861684][ C0] __lock_acquire (kernel/locking/lockdep.c:5091)
[ 34.861996][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756)
[ 34.862177][ C0] ? ipv6_get_lladdr (net/ipv6/addrconf.c:1911 net/ipv6/addrconf.c:1934)
[ 34.862354][ C0] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719)
[ 34.862535][ C0] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52))
[ 34.862835][ C0] ? ipv6_get_lladdr (net/ipv6/addrconf.c:1911 net/ipv6/addrconf.c:1934)
[ 34.863010][ C0] ? lock_acquire (kernel/locking/lockdep.c:5727)
[ 34.863202][ C0] ? ipv6_get_lladdr (net/ipv6/addrconf.c:1911 net/ipv6/addrconf.c:1934)
[ 34.863378][ C0] _raw_read_lock_bh (./include/linux/rwlock_api_smp.h:177 kernel/locking/spinlock.c:252)
[ 34.863689][ C0] ? ipv6_get_lladdr (net/ipv6/addrconf.c:1911 net/ipv6/addrconf.c:1934)
[ 34.863865][ C0] ipv6_get_lladdr (net/ipv6/addrconf.c:1911 net/ipv6/addrconf.c:1934)
[ 34.864043][ C0] ndisc_send_ns (net/ipv6/ndisc.c:658)
[ 34.864223][ C0] ? __pfx_ndisc_send_ns (net/ipv6/ndisc.c:653)
[ 34.864405][ C0] ? __ipv6_chk_addr_and_flags (net/ipv6/addrconf.c:2009)
[ 34.864631][ C0] ndisc_solicit (net/ipv6/ndisc.c:736)
[ 34.864809][ C0] ? __pfx_ndisc_solicit (net/ipv6/ndisc.c:736)
[ 34.864987][ C0] ? neigh_probe (net/core/neighbour.c:1074)
[ 34.865167][ C0] neigh_probe (net/core/neighbour.c:1075)
[ 34.865301][ C0] __neigh_event_send (net/core/neighbour.c:1242)
[ 34.865480][ C0] neigh_resolve_output (net/core/neighbour.c:1547)
[ 34.865661][ C0] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:77 kernel/softirq.c:387)
[ 34.865838][ C0] ? ___neigh_create (net/core/neighbour.c:722 (discriminator 9))
[ 34.866141][ C0] ip6_finish_output2 (./include/net/neighbour.h:542 net/ipv6/ip6_output.c:137)
[ 34.866320][ C0] ip6_finish_output (net/ipv6/ip6_output.c:211 net/ipv6/ip6_output.c:222)
[ 34.866497][ C0] ip6_output (./include/linux/netfilter.h:303 net/ipv6/ip6_output.c:243)
[ 34.866632][ C0] ? __pfx_ip6_output (net/ipv6/ip6_output.c:230)
[ 34.866933][ C0] ? pskb_expand_head (./arch/x86/include/asm/atomic.h:28 ./include/linux/atomic/atomic-arch-fallback.h:503 ./include/linux/atomic/atomic-instrumented.h:68 net/core/skbuff.c:2267)
[ 34.867114][ C0] ? ip6_mtu (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:814 ./include/net/ip6_route.h:336 net/ipv6/route.c:3217)
[ 34.867263][ C0] ? ip6_local_out (net/ipv6/output_core.c:154)
[ 34.867445][ C0] udp_tunnel6_xmit_skb (./include/net/ip6_tunnel.h:163 net/ipv6/ip6_udp_tunnel.c:111) ip6_udp_tunnel
[ 34.867671][ C0] vxlan_xmit_one (drivers/net/vxlan/vxlan_core.c:2551) vxlan
[ 34.867986][ C0] ? stack_access_ok (arch/x86/kernel/unwind_orc.c:396)
[ 34.868165][ C0] ? ip6_fraglist_init (./include/linux/skbuff.h:2711 net/ipv6/ip6_output.c:715)
[ 34.868348][ C0] ? __pfx_vxlan_xmit_one (drivers/net/vxlan/vxlan_core.c:2313) vxlan
[ 34.868588][ C0] ? __lock_acquire (kernel/locking/lockdep.c:5137)
[ 34.868890][ C0] ? orc_sort_cmp (arch/x86/kernel/unwind_orc.c:80 arch/x86/kernel/unwind_orc.c:271)
[ 34.869069][ C0] ? __dev_queue_xmit (./include/linux/bottom_half.h:20 ./include/linux/rcupdate.h:833 net/core/dev.c:4297)
[ 34.869260][ C0] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756)
[ 34.869438][ C0] ? vxlan_xmit (drivers/net/vxlan/vxlan_core.c:2766) vxlan
[ 34.869758][ C0] vxlan_xmit (drivers/net/vxlan/vxlan_core.c:2766) vxlan
[ 34.869949][ C0] dev_hard_start_xmit (./include/linux/netdevice.h:4875 ./include/linux/netdevice.h:4889 net/core/dev.c:3563 net/core/dev.c:3579)
[ 34.870127][ C0] ? validate_xmit_skb.constprop.0 (net/core/dev.c:3634)
[ 34.870354][ C0] __dev_queue_xmit (net/core/dev.h:167 net/core/dev.c:4373)
[ 34.870534][ C0] ? find_held_lock (kernel/locking/lockdep.c:5244)
[ 34.870713][ C0] ? __pfx___dev_queue_xmit (net/core/dev.c:4281)
[ 34.870902][ C0] ? __lock_release (kernel/locking/lockdep.c:5430)
[ 34.871079][ C0] ? __pfx___lock_release (kernel/locking/lockdep.c:5406)
[ 34.871272][ C0] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719)
[ 34.871452][ C0] br_dev_queue_push_xmit (net/bridge/br_forward.c:34) bridge
[ 34.871713][ C0] ? __pfx_br_dev_queue_push_xmit (net/bridge/br_forward.c:34) bridge
[ 34.871975][ C0] ? __br_forward (./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/bridge/br_forward.c:115) bridge
[ 34.872190][ C0] deliver_clone (net/bridge/br_forward.c:132) bridge
[ 34.872401][ C0] br_handle_frame_finish (net/bridge/br_input.c:215) bridge
[ 34.872659][ C0] ? __pfx_br_handle_frame_finish (net/bridge/br_input.c:75) bridge
[ 34.872916][ C0] ? 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)
[ 34.873093][ C0] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3))
[ 34.873237][ C0] br_handle_frame (net/bridge/br_input.c:417) bridge
[ 34.873449][ C0] ? __pfx_br_handle_frame (net/bridge/br_input.c:321) bridge
[ 34.873704][ C0] __netif_receive_skb_core.constprop.0 (net/core/dev.c:5498)
[ 34.873931][ C0] ? __lock_acquire (kernel/locking/lockdep.c:5137)
[ 34.874109][ C0] ? __pfx___netif_receive_skb_core.constprop.0 (net/core/dev.c:5391)
[ 34.874332][ C0] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756)
[ 34.874516][ C0] ? process_backlog (./include/linux/rcupdate.h:329 ./include/linux/rcupdate.h:781 net/core/dev.c:6046)
[ 34.874695][ C0] __netif_receive_skb_one_core (net/core/dev.c:5603)
[ 34.874916][ C0] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5597)
[ 34.875151][ C0] ? process_backlog (./include/linux/rcupdate.h:329 ./include/linux/rcupdate.h:781 net/core/dev.c:6046)
[ 34.875332][ C0] ? lock_acquire (kernel/locking/lockdep.c:5727)
[ 34.875509][ C0] ? process_backlog (./include/linux/rcupdate.h:329 ./include/linux/rcupdate.h:781 net/core/dev.c:6046)
[ 34.875693][ C0] process_backlog (./include/linux/rcupdate.h:810 net/core/dev.c:6048)
[ 34.875871][ C0] ? find_held_lock (kernel/locking/lockdep.c:5244)
[ 34.876049][ C0] __napi_poll.constprop.0 (net/core/dev.c:6701)
[ 34.876228][ C0] net_rx_action (net/core/dev.c:6770 net/core/dev.c:6886)
[ 34.876408][ C0] ? __pfx_net_rx_action (net/core/dev.c:6850)
[ 34.876586][ C0] ? usage_skip (kernel/locking/lockdep.c:2295 kernel/locking/lockdep.c:2263)
[ 34.876770][ C0] ? mark_held_locks (kernel/locking/lockdep.c:4274)
[ 34.876950][ C0] __do_softirq (kernel/softirq.c:554)
[ 34.877128][ C0] ? __dev_queue_xmit (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:849 net/core/dev.c:4399)
[ 34.877306][ C0] do_softirq (kernel/softirq.c:455 kernel/softirq.c:442)
[ 34.877440][ C0]
[ 34.877534][ C0]
[ 34.877626][ C0] __local_bh_enable_ip (kernel/softirq.c:382)
[ 34.877813][ C0] ? __dev_queue_xmit (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:849 net/core/dev.c:4399)
[ 34.877990][ C0] __dev_queue_xmit (net/core/dev.c:4400)
[ 34.878169][ C0] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3))
[ 34.878304][ C0] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52))
[ 34.878482][ C0] ? mark_held_locks (kernel/locking/lockdep.c:4274)
[ 34.878679][ C0] ? eth_header (net/ethernet/eth.c:100)
[ 34.878856][ C0] ? __pfx___dev_queue_xmit (net/core/dev.c:4281)
[ 34.879042][ C0] ip6_finish_output2 (./include/net/neighbour.h:542 net/ipv6/ip6_output.c:137)
[ 34.879236][ C0] ip6_finish_output (net/ipv6/ip6_output.c:211 net/ipv6/ip6_output.c:222)
[ 34.879414][ C0] ? 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)
[ 34.879591][ C0] ip6_output (./include/linux/netfilter.h:303 net/ipv6/ip6_output.c:243)
[ 34.879731][ C0] ? __pfx_ip6_output (net/ipv6/ip6_output.c:230)
[ 34.879910][ C0] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5719)
[ 34.880094][ C0] NF_HOOK.constprop.0 (./include/linux/rcupdate.h:329 ./include/linux/rcupdate.h:781 ./include/linux/netfilter.h:238 ./include/linux/netfilter.h:312)
[ 34.880271][ C0] ? ndisc_send_skb (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:814 net/ipv6/ndisc.c:455 net/ipv6/ndisc.c:503)
[ 34.880453][ C0] ? __pfx_NF_HOOK.constprop.0 (./include/linux/netfilter.h:308)
[ 34.880630][ C0] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719)
[ 34.880809][ C0] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52))
[ 34.880989][ C0] ndisc_send_skb (net/ipv6/ndisc.c:512 (discriminator 60))
[ 34.881170][ C0] ? __pfx_ndisc_send_skb (net/ipv6/ndisc.c:473)
[ 34.881354][ C0] ndisc_send_ns (net/ipv6/ndisc.c:653)
[ 34.881532][ C0] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3))
[ 34.881667][ C0] ? __pfx_ndisc_send_ns (net/ipv6/ndisc.c:653)
[ 34.881846][ C0] ? mark_held_locks (kernel/locking/lockdep.c:4274)
[ 34.882024][ C0] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359)
[ 34.882248][ C0] addrconf_dad_work (net/ipv6/addrconf.c:4280)
[ 34.882430][ C0] ? __pfx_addrconf_dad_work (net/ipv6/addrconf.c:4178)
[ 34.882610][ C0] ? process_one_work (kernel/workqueue.c:3230)
[ 34.882788][ C0] ? lock_acquire (kernel/locking/lockdep.c:5727)
[ 34.882967][ C0] ? process_one_work (kernel/workqueue.c:3230)
[ 34.883159][ C0] process_one_work (kernel/workqueue.c:3254)
[ 34.883341][ C0] ? __pfx___lock_release (kernel/locking/lockdep.c:5406)
[ 34.883522][ C0] ? __pfx_process_one_work (kernel/workqueue.c:3156)
[ 34.883702][ C0] ? assign_work (kernel/workqueue.c:1209)
[ 34.883881][ C0] worker_thread (kernel/workqueue.c:3329 kernel/workqueue.c:3416)
[ 34.884060][ C0] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359)
[ 34.884282][ C0] ? __pfx_worker_thread (kernel/workqueue.c:3362)
[ 34.884460][ C0] ? __pfx_worker_thread (kernel/workqueue.c:3362)
[ 34.884640][ C0] kthread (kernel/kthread.c:388)
[ 34.884774][ C0] ? __pfx_kthread (kernel/kthread.c:341)
[ 34.884951][ C0] ret_from_fork (arch/x86/kernel/process.c:147)
[ 34.885128][ C0] ? __pfx_kthread (kernel/kthread.c:341)
Finger prints:
ret_from_fork_asm:dump_stack_lvl:mark_lock_irq:mark_lock