======================================
| [ 24.488692][ T8] br0: port 2(s1) entered forwarding state
| [ 24.821442][ C2] ------------[ cut here ]------------
| [ 24.821824][ C2] UBSAN: invalid-load in ./include/linux/skbuff.h:4267:9
| [ 24.822219][ C2] load of value 107 is not a valid value for type '_Bool'
[ 24.822987][ C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 24.823657][ C2] Workqueue: mld mld_ifc_work
[ 24.823908][ C2] Call Trace:
[ 24.824083][ C2]
[ 24.824263][ C2] dump_stack_lvl (lib/dump_stack.c:107)
[ 24.824504][ C2] __ubsan_handle_load_invalid_value (lib/ubsan.c:218 lib/ubsan.c:419)
[ 24.824825][ C2] ? __copy_skb_header (./include/net/dst.h:290 net/core/skbuff.c:1531)
[ 24.825090][ C2] __br_forward.cold (./include/linux/skbuff.h:4267 net/bridge/br_forward.c:65 ./include/linux/netfilter.h:423 net/bridge/br_forward.c:115)
[ 24.825367][ C2] deliver_clone (net/bridge/br_forward.c:132)
[ 24.825602][ C2] br_handle_frame_finish (net/bridge/br_input.c:216)
[ 24.825888][ C2] ? __pfx_br_handle_frame_finish (net/bridge/br_input.c:75)
[ 24.826203][ C2] ? rcu_read_lock_bh_held (kernel/rcu/update.c:113 kernel/rcu/update.c:103 kernel/rcu/update.c:374)
[ 24.826518][ C2] ? tc_run (net/core/dev.c:3907 (discriminator 3))
[ 24.826736][ 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)
[ 24.826980][ C2] br_handle_frame (net/bridge/br_input.c:417)
[ 24.827231][ C2] ? __pfx_br_handle_frame (net/bridge/br_input.c:321)
[ 24.827520][ C2] __netif_receive_skb_core.constprop.0 (net/core/dev.c:5448)
[ 24.827887][ C2] ? __lock_acquire (kernel/locking/lockdep.c:5137)
[ 24.828149][ C2] ? __pfx___netif_receive_skb_core.constprop.0 (net/core/dev.c:5341)
[ 24.828519][ C2] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756)
[ 24.828815][ C2] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:5995)
[ 24.829077][ C2] __netif_receive_skb_one_core (net/core/dev.c:5553)
[ 24.829379][ C2] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5547)
[ 24.829713][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725)
[ 24.829982][ C2] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:5995)
[ 24.830242][ C2] process_backlog (./include/linux/rcupdate.h:779 net/core/dev.c:5997)
[ 24.830495][ C2] __napi_poll.constprop.0 (net/core/dev.c:6625)
[ 24.830776][ C2] net_rx_action (net/core/dev.c:6694 net/core/dev.c:6827)
[ 24.831056][ C2] ? __pfx_net_rx_action (net/core/dev.c:6791)
[ 24.831322][ C2] ? hlock_class (kernel/locking/lockdep.c:223)
[ 24.831565][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4274)
[ 24.831820][ C2] __do_softirq (kernel/softirq.c:553)
[ 24.832090][ C2] ? __dev_queue_xmit (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:818 net/core/dev.c:4364)
[ 24.832356][ C2] do_softirq (kernel/softirq.c:454 kernel/softirq.c:441)
[ 24.832575][ C2]
[ 24.832729][ C2]
[ 24.832882][ C2] __local_bh_enable_ip (kernel/softirq.c:381)
[ 24.833183][ C2] ? __dev_queue_xmit (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:818 net/core/dev.c:4364)
[ 24.833449][ C2] __dev_queue_xmit (net/core/dev.c:4365)
[ 24.833708][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4274)
[ 24.833960][ C2] ? eth_header (net/ethernet/eth.c:100)
[ 24.834217][ C2] ? __pfx___dev_queue_xmit (net/core/dev.c:4246)
[ 24.834507][ C2] ? neigh_resolve_output (./include/linux/netdevice.h:3226 net/core/neighbour.c:1558 net/core/neighbour.c:1543)
[ 24.834795][ C2] ip6_finish_output2 (./include/net/neighbour.h:542 net/ipv6/ip6_output.c:137)
[ 24.835064][ C2] ip6_finish_output.constprop.0 (net/ipv6/ip6_output.c:211 net/ipv6/ip6_output.c:222)
[ 24.835407][ C2] mld_sendpack (net/ipv6/mcast.c:1822)
[ 24.835652][ C2] ? __pfx_mld_sendpack (net/ipv6/mcast.c:1779)
[ 24.835923][ C2] ? mld_send_cr (net/ipv6/mcast.c:2096 (discriminator 11))
[ 24.836167][ C2] mld_ifc_work (net/ipv6/mcast.c:2652)
[ 24.836415][ C2] process_one_work (kernel/workqueue.c:2633)
[ 24.836700][ 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)
[ 24.836943][ C2] ? __pfx_process_one_work (kernel/workqueue.c:2542)
[ 24.837231][ C2] ? assign_work (kernel/workqueue.c:1101)
[ 24.837474][ C2] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787)
[ 24.837747][ C2] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359)
[ 24.838090][ C2] ? __pfx_worker_thread (kernel/workqueue.c:2733)
[ 24.838357][ C2] ? __pfx_worker_thread (kernel/workqueue.c:2733)
[ 24.838621][ C2] kthread (kernel/kthread.c:388)
[ 24.838861][ C2] ? __pfx_kthread (kernel/kthread.c:341)
[ 24.839102][ C2] ret_from_fork (arch/x86/kernel/process.c:147)
[ 24.839333][ C2] ? __pfx_kthread (kernel/kthread.c:341)
[ 24.839573][ C2] ret_from_fork_asm (arch/x86/entry/entry_64.S:250)
| [ 24.840042][ C2] ---[ end trace ]---
| [ 24.840261][ C2] ------------[ cut here ]------------
| [ 24.840578][ C2] UBSAN: invalid-load in ./include/linux/skbuff.h:4267:9
| [ 24.840980][ C2] load of value 107 is not a valid value for type '_Bool'
[ 24.841746][ C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 24.842394][ C2] Workqueue: mld mld_ifc_work
[ 24.842643][ C2] Call Trace:
[ 24.842817][ C2]
[ 24.842967][ C2] dump_stack_lvl (lib/dump_stack.c:107)
[ 24.843250][ C2] __ubsan_handle_load_invalid_value (lib/ubsan.c:218 lib/ubsan.c:419)
[ 24.843578][ C2] skb_scrub_packet.cold (./include/linux/skbuff.h:4267 net/core/skbuff.c:6030)
[ 24.843849][ C2] __dev_forward_skb2 (./include/linux/netdevice.h:4115 net/core/dev.c:2135)
[ 24.844113][ C2] veth_xmit (drivers/net/veth.c:319 drivers/net/veth.c:374)
[ 24.844363][ C2] ? __pfx_passthru_features_check (net/core/dev.c:3436)
[ 24.844687][ C2] dev_hard_start_xmit (./include/linux/netdevice.h:4991 ./include/linux/netdevice.h:5005 net/core/dev.c:3530 net/core/dev.c:3546)
[ 24.844961][ C2] __dev_queue_xmit (./include/linux/netdevice.h:3369 net/core/dev.c:4338)
[ 24.845229][ C2] ? _printk (kernel/printk/printk.c:2323)
[ 24.845474][ C2] ? __pfx___dev_queue_xmit (net/core/dev.c:4246)
[ 24.845769][ C2] br_dev_queue_push_xmit (net/bridge/br_forward.c:34)
[ 24.846050][ C2] ? __pfx_br_dev_queue_push_xmit (net/bridge/br_forward.c:34)
[ 24.846353][ C2] ? __copy_skb_header (./include/net/dst.h:290 net/core/skbuff.c:1531)
[ 24.846647][ C2] ? __br_forward.cold (./include/linux/skbuff.h:4267 net/bridge/br_forward.c:65 ./include/linux/netfilter.h:423 net/bridge/br_forward.c:115)
[ 24.846904][ C2] deliver_clone (net/bridge/br_forward.c:132)
[ 24.847139][ C2] br_handle_frame_finish (net/bridge/br_input.c:216)
[ 24.847427][ C2] ? __pfx_br_handle_frame_finish (net/bridge/br_input.c:75)
[ 24.847770][ C2] ? rcu_read_lock_bh_held (kernel/rcu/update.c:113 kernel/rcu/update.c:103 kernel/rcu/update.c:374)
[ 24.848046][ C2] ? tc_run (net/core/dev.c:3907 (discriminator 3))
[ 24.848265][ 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)
[ 24.848508][ C2] br_handle_frame (net/bridge/br_input.c:417)
[ 24.848772][ C2] ? __pfx_br_handle_frame (net/bridge/br_input.c:321)
[ 24.849057][ C2] __netif_receive_skb_core.constprop.0 (net/core/dev.c:5448)
[ 24.849408][ C2] ? __lock_acquire (kernel/locking/lockdep.c:5137)
[ 24.849672][ C2] ? __pfx___netif_receive_skb_core.constprop.0 (net/core/dev.c:5341)
[ 24.850043][ C2] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756)
[ 24.850311][ C2] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:5995)
[ 24.850575][ C2] __netif_receive_skb_one_core (net/core/dev.c:5553)
[ 24.850878][ C2] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5547)
[ 24.851212][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725)
[ 24.851453][ C2] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:5995)
[ 24.851736][ C2] process_backlog (./include/linux/rcupdate.h:779 net/core/dev.c:5997)
[ 24.852015][ C2] __napi_poll.constprop.0 (net/core/dev.c:6625)
[ 24.852395][ C2] net_rx_action (net/core/dev.c:6694 net/core/dev.c:6827)
[ 24.852791][ C2] ? __pfx_net_rx_action (net/core/dev.c:6791)
[ 24.853165][ C2] ? hlock_class (kernel/locking/lockdep.c:223)
[ 24.853426][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4274)
[ 24.853801][ C2] __do_softirq (kernel/softirq.c:553)
[ 24.854135][ C2] ? __dev_queue_xmit (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:818 net/core/dev.c:4364)
[ 24.854538][ C2] do_softirq (kernel/softirq.c:454 kernel/softirq.c:441)
[ 24.854871][ C2]
[ 24.855104][ C2]
[ 24.855322][ C2] __local_bh_enable_ip (kernel/softirq.c:381)
[ 24.855721][ C2] ? __dev_queue_xmit (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:818 net/core/dev.c:4364)
[ 24.856118][ C2] __dev_queue_xmit (net/core/dev.c:4365)
[ 24.856507][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4274)
[ 24.856884][ C2] ? eth_header (net/ethernet/eth.c:100)
[ 24.857246][ C2] ? __pfx___dev_queue_xmit (net/core/dev.c:4246)
[ 24.857664][ C2] ? neigh_resolve_output (./include/linux/netdevice.h:3226 net/core/neighbour.c:1558 net/core/neighbour.c:1543)
[ 24.858107][ C2] ip6_finish_output2 (./include/net/neighbour.h:542 net/ipv6/ip6_output.c:137)
[ 24.858518][ C2] ip6_finish_output.constprop.0 (net/ipv6/ip6_output.c:211 net/ipv6/ip6_output.c:222)
[ 24.858994][ C2] mld_sendpack (net/ipv6/mcast.c:1822)
[ 24.859365][ C2] ? __pfx_mld_sendpack (net/ipv6/mcast.c:1779)
[ 24.859782][ C2] ? mld_send_cr (net/ipv6/mcast.c:2096 (discriminator 11))
[ 24.860156][ C2] mld_ifc_work (net/ipv6/mcast.c:2652)
[ 24.860514][ C2] process_one_work (kernel/workqueue.c:2633)
[ 24.860920][ 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)
[ 24.861278][ C2] ? __pfx_process_one_work (kernel/workqueue.c:2542)
[ 24.861716][ C2] ? assign_work (kernel/workqueue.c:1101)
[ 24.862087][ C2] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787)
[ 24.862459][ C2] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359)
[ 24.862978][ C2] ? __pfx_worker_thread (kernel/workqueue.c:2733)
[ 24.863387][ C2] ? __pfx_worker_thread (kernel/workqueue.c:2733)
[ 24.863782][ C2] kthread (kernel/kthread.c:388)
[ 24.863998][ C2] ? __pfx_kthread (kernel/kthread.c:341)
[ 24.864240][ C2] ret_from_fork (arch/x86/kernel/process.c:147)
[ 24.864482][ C2] ? __pfx_kthread (kernel/kthread.c:341)
Finger prints:
dump_stack_lvl:__ubsan_handle_load_invalid_value:deliver_clone:br_handle_frame_finish
dump_stack_lvl:__ubsan_handle_load_invalid_value:__dev_forward_skb2:veth_xmit