======================================
| [ 23.329617][ C0] #4: ffff88800d0d3358 (&br->multicast_lock){+.-.}-{3:3}, at: br_multicast_port_query_expired (./include/trace/events/../../../net/bridge/br_private.h:1293 ./include/trace/events/../../../net/bridge/br_private.h:1302 net/bridge/br_multicast.c:1906) bridge
| [ 23.330123][ C0] #5: ffffffffa015b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit (./include/linux/bottom_half.h:20 ./include/linux/rcupdate.h:901 net/core/dev.c:4555)
| [ 23.330611][ C0]
| [ 23.330611][ C0] stack backtrace:
[ 23.330876][ C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.330881][ C0] Workqueue: events_unbound linkwatch_event
[ 23.330889][ C0] Call Trace:
[ 23.330892][ C0]
[ 23.330894][ C0] dump_stack_lvl (lib/dump_stack.c:123)
[ 23.330902][ C0] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6848)
[ 23.330913][ C0] dev_hard_start_xmit (./include/net/net_namespace.h:418 ./include/linux/netdevice.h:2695 net/core/dev.c:2466 net/core/dev.c:3772 net/core/dev.c:3793)
[ 23.330925][ C0] __dev_queue_xmit (net/core/dev.h:340 net/core/dev.c:4631)
[ 23.330935][ C0] ? __build_skb_around (./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:381 net/core/skbuff.c:439)
[ 23.330949][ C0] ? __pfx___dev_queue_xmit (net/core/dev.c:4538)
[ 23.330952][ C0] ? __pfx___alloc_skb (net/core/skbuff.c:642)
[ 23.330959][ C0] ? stack_trace_save (kernel/stacktrace.c:123)
[ 23.330964][ C0] ? __pfx_stack_trace_save (kernel/stacktrace.c:114)
[ 23.330972][ C0] ? __pfx___br_multicast_query_handle_vlan (net/bridge/br_multicast.c:909) bridge
[ 23.331026][ C0] br_dev_queue_push_xmit (net/bridge/br_forward.c:34) bridge
[ 23.331061][ C0] ? __pfx_br_dev_queue_push_xmit (net/bridge/br_forward.c:34) bridge
[ 23.331094][ C0] ? br_multicast_count (./arch/x86/include/asm/bitops.h:206 ./arch/x86/include/asm/bitops.h:238 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/trace/events/../../../net/bridge/br_private.h:764 net/bridge/br_multicast.c:5052) bridge
[ 23.331133][ C0] __br_multicast_send_query (net/bridge/br_multicast.c:1813) bridge
[ 23.331178][ C0] ? __pfx___br_multicast_send_query (net/bridge/br_multicast.c:1789) bridge
[ 23.331219][ C0] ? __lock_acquire (kernel/locking/lockdep.c:5228)
[ 23.331230][ C0] ? br_multicast_send_query (net/bridge/br_multicast.c:1891) bridge
[ 23.331264][ C0] br_multicast_send_query (net/bridge/br_multicast.c:1891) bridge
[ 23.331302][ C0] ? __pfx_br_multicast_send_query (net/bridge/br_multicast.c:1852) bridge
[ 23.331336][ C0] ? br_multicast_port_query_expired (./include/trace/events/../../../net/bridge/br_private.h:1293 ./include/trace/events/../../../net/bridge/br_private.h:1302 net/bridge/br_multicast.c:1906) bridge
[ 23.331372][ C0] ? __pfx_br_ip4_multicast_port_query_expired (net/bridge/br_multicast.c:1920) bridge
[ 23.331406][ C0] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816)
[ 23.331413][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116)
[ 23.331417][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114)
[ 23.331421][ C0] ? lock_acquire (kernel/locking/lockdep.c:5824)
[ 23.331424][ C0] ? br_multicast_port_query_expired (./include/trace/events/../../../net/bridge/br_private.h:1293 ./include/trace/events/../../../net/bridge/br_private.h:1302 net/bridge/br_multicast.c:1906) bridge
[ 23.331464][ C0] ? br_multicast_port_query_expired (net/bridge/br_multicast.c:1917) bridge
[ 23.331496][ C0] ? __pfx_br_ip4_multicast_port_query_expired (net/bridge/br_multicast.c:1920) bridge
[ 23.331529][ C0] br_multicast_port_query_expired (net/bridge/br_multicast.c:1917) bridge
[ 23.331565][ C0] ? __pfx_br_ip4_multicast_port_query_expired (net/bridge/br_multicast.c:1920) bridge
[ 23.331599][ C0] call_timer_fn (kernel/time/timer.c:1789)
[ 23.331603][ C0] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1779)
[ 23.331605][ C0] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1779)
[ 23.331610][ C0] ? __pfx_call_timer_fn (kernel/time/timer.c:1766)
[ 23.331613][ 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:230)
[ 23.331622][ C0] ? mark_held_locks (kernel/locking/lockdep.c:4323)
[ 23.331634][ C0] __run_timers (kernel/time/timer.c:1841 kernel/time/timer.c:2414)
[ 23.331638][ C0] ? __pfx_br_ip4_multicast_port_query_expired (net/bridge/br_multicast.c:1920) bridge
[ 23.331680][ C0] ? __pfx___run_timers (kernel/time/timer.c:2385)
[ 23.331689][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116)
[ 23.331694][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114)
[ 23.331697][ C0] ? lock_acquire (kernel/locking/lockdep.c:5824)
[ 23.331700][ C0] ? run_timer_softirq (kernel/time/timer.c:2426 kernel/time/timer.c:2418 kernel/time/timer.c:2435 kernel/time/timer.c:2445)
[ 23.331711][ C0] run_timer_softirq (kernel/time/timer.c:2427 kernel/time/timer.c:2418 kernel/time/timer.c:2435 kernel/time/timer.c:2445)
[ 23.331716][ C0] handle_softirqs (kernel/softirq.c:561)
[ 23.331725][ C0] ? br_device_event (net/bridge/br.c:97) bridge
[ 23.331756][ C0] do_softirq (kernel/softirq.c:462 kernel/softirq.c:449)
[ 23.331760][ C0]
[ 23.331761][ C0]
[ 23.331763][ C0] __local_bh_enable_ip (kernel/softirq.c:389)
[ 23.331767][ C0] br_device_event (net/bridge/br.c:97) bridge
[ 23.331798][ C0] ? __pfx_br_device_event (net/bridge/br.c:29) bridge
[ 23.331829][ C0] ? packet_notifier (net/packet/af_packet.c:4281)
[ 23.331839][ C0] notifier_call_chain (kernel/notifier.c:85 (discriminator 2))
[ 23.331851][ C0] netdev_state_change (net/core/dev.c:1538 net/core/dev.c:1529)
[ 23.331855][ C0] ? __pfx_netdev_state_change (net/core/dev.c:1530)
[ 23.331871][ C0] linkwatch_do_dev (net/core/link_watch.c:186)
[ 23.331875][ C0] __linkwatch_run_queue (./include/linux/spinlock.h:376 net/core/link_watch.c:245)
[ 23.331882][ C0] ? __pfx___linkwatch_run_queue (net/core/link_watch.c:195)
[ 23.331889][ C0] ? lock_acquire (kernel/locking/lockdep.c:5824)
[ 23.331899][ C0] linkwatch_event (net/core/link_watch.c:287)
[ 23.331901][ C0] process_one_work (kernel/workqueue.c:3238)
[ 23.331915][ C0] ? __pfx___lock_release (kernel/locking/lockdep.c:5503)
[ 23.331920][ C0] ? __pfx_process_one_work (kernel/workqueue.c:3140)
[ 23.331933][ C0] ? assign_work (kernel/workqueue.c:1200)
[ 23.331943][ C0] worker_thread (kernel/workqueue.c:3313 kernel/workqueue.c:3400)
[ 23.331948][ C0] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408)
[ 23.331959][ C0] ? __pfx_worker_thread (kernel/workqueue.c:3346)
[ 23.331965][ C0] kthread (kernel/kthread.c:464)
[ 23.331970][ C0] ? __pfx_kthread (kernel/kthread.c:413)
[ 23.331979][ C0] ? __pfx_kthread (kernel/kthread.c:413)
[ 23.331984][ C0] ret_from_fork (arch/x86/kernel/process.c:148)
[ 23.331988][ C0] ? __pfx_kthread (kernel/kthread.c:413)
Finger prints:
lockdep_rcu_suspicious:dev_hard_start_xmit:__dev_queue_xmit:br_dev_queue_push_xmit:__br_multicast_send_query