[ 11.613772][ T250] ip (250) used greatest stack depth: 24352 bytes left
[ 11.977845][ T260] ip (260) used greatest stack depth: 23648 bytes left
[ 13.788029][ T290] 8021q: 802.1Q VLAN Support v1.8
[ 15.148723][ T307] br0: port 1(veth1) entered blocking state
[ 15.149241][ T307] br0: port 1(veth1) entered disabled state
[ 15.149623][ T307] veth1: entered allmulticast mode
[ 15.151964][ T307] veth1: entered promiscuous mode
[ 15.235910][ T309] br0: port 2(veth2) entered blocking state
[ 15.236385][ T309] br0: port 2(veth2) entered disabled state
[ 15.236673][ T309] veth2: entered allmulticast mode
[ 15.239082][ T309] veth2: entered promiscuous mode
[ 15.402131][ T41] br0: port 1(veth1) entered blocking state
[ 15.402560][ T41] br0: port 1(veth1) entered forwarding state
[ 15.403460][ C2]
[ 15.403701][ C2] =============================
[ 15.403942][ C2] WARNING: suspicious RCU usage
[ 15.404186][ C2] 6.14.0-rc6-virtme #1 Not tainted
[ 15.404414][ C2] -----------------------------
[ 15.404641][ C2] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage!
[ 15.405036][ C2]
[ 15.405036][ C2] other info that might help us debug this:
[ 15.405036][ C2]
[ 15.405471][ C2]
[ 15.405471][ C2] rcu_scheduler_active = 2, debug_locks = 1
[ 15.405783][ C2] 6 locks held by kworker/u20:0/41:
[ 15.406001][ C2] #0: ffff8880010a9d48 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x7ec/0x16d0
[ 15.406453][ C2] #1: ffffc900002dfd40 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0xe0b/0x16d0
[ 15.406878][ C2] #2: ffffffffa13f0a08 (rtnl_mutex){+.+.}-{4:4}, at: linkwatch_event+0xe/0x60
[ 15.407263][ C2] #3: ffffc90000248d78 ((&pmctx->ip4_own_query.timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230
[ 15.407683][ C2] #4: ffff88800f9c3358 (&br->multicast_lock){+.-.}-{3:3}, at: br_multicast_port_query_expired+0x62/0x2c0 [bridge]
[ 15.408184][ C2] #5: ffffffffa0b5b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0
[ 15.408539][ C2]
[ 15.408539][ C2] stack backtrace:
[ 15.408784][ C2] CPU: 2 UID: 0 PID: 41 Comm: kworker/u20:0 Not tainted 6.14.0-rc6-virtme #1
[ 15.408788][ C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 15.408791][ C2] Workqueue: events_unbound linkwatch_event
[ 15.408796][ C2] Call Trace:
[ 15.408798][ C2]
[ 15.408801][ C2] dump_stack_lvl+0xb0/0xd0
[ 15.408808][ C2] lockdep_rcu_suspicious+0x1ea/0x280
[ 15.408819][ C2] dev_hard_start_xmit+0x2fc/0x3f0
[ 15.408830][ C2] __dev_queue_xmit+0xfaf/0x18d0
[ 15.408841][ C2] ? __build_skb_around+0x23d/0x350
[ 15.408851][ C2] ? __pfx___dev_queue_xmit+0x10/0x10
[ 15.408853][ C2] ? __pfx___alloc_skb+0x10/0x10
[ 15.408860][ C2] ? stack_trace_save+0x94/0xd0
[ 15.408866][ C2] ? __pfx_stack_trace_save+0x10/0x10
[ 15.408873][ C2] ? __pfx___br_multicast_query_handle_vlan+0x10/0x10 [bridge]
[ 15.408926][ C2] br_dev_queue_push_xmit+0x115/0x250 [bridge]
[ 15.408959][ C2] ? __pfx_br_dev_queue_push_xmit+0x10/0x10 [bridge]
[ 15.408991][ C2] ? br_multicast_count+0x42/0x130 [bridge]
[ 15.409031][ C2] __br_multicast_send_query+0x3b7/0x950 [bridge]
[ 15.409079][ C2] ? __pfx___br_multicast_send_query+0x10/0x10 [bridge]
[ 15.409120][ C2] ? __lock_acquire+0xb9a/0x1680
[ 15.409131][ C2] ? br_multicast_send_query+0x228/0x440 [bridge]
[ 15.409165][ C2] br_multicast_send_query+0x228/0x440 [bridge]
[ 15.409203][ C2] ? __pfx_br_multicast_send_query+0x10/0x10 [bridge]
[ 15.409236][ C2] ? br_multicast_port_query_expired+0x62/0x2c0 [bridge]
[ 15.409273][ C2] ? __pfx_br_ip4_multicast_port_query_expired+0x10/0x10 [bridge]
[ 15.409307][ C2] ? __pfx_lock_acquire.part.0+0x10/0x10
[ 15.409313][ C2] ? do_raw_spin_lock+0x131/0x270
[ 15.409318][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10
[ 15.409322][ C2] ? lock_acquire+0x32/0xc0
[ 15.409325][ C2] ? br_multicast_port_query_expired+0x62/0x2c0 [bridge]
[ 15.409364][ C2] ? br_multicast_port_query_expired+0x230/0x2c0 [bridge]
[ 15.409396][ C2] ? __pfx_br_ip4_multicast_port_query_expired+0x10/0x10 [bridge]
[ 15.409429][ C2] br_multicast_port_query_expired+0x230/0x2c0 [bridge]
[ 15.409465][ C2] ? __pfx_br_ip4_multicast_port_query_expired+0x10/0x10 [bridge]
[ 15.409499][ C2] call_timer_fn+0x13b/0x230
[ 15.409502][ C2] ? call_timer_fn+0xe8/0x230
[ 15.409505][ C2] ? call_timer_fn+0xe8/0x230
[ 15.409509][ C2] ? __pfx_call_timer_fn+0x10/0x10
[ 15.409513][ C2] ? hlock_class+0x4e/0x130
[ 15.409522][ C2] ? mark_held_locks+0x9e/0xe0
[ 15.409534][ C2] __run_timers+0x545/0x810
[ 15.409538][ C2] ? __pfx_br_ip4_multicast_port_query_expired+0x10/0x10 [bridge]
[ 15.409580][ C2] ? __pfx___run_timers+0x10/0x10
[ 15.409589][ C2] ? do_raw_spin_lock+0x131/0x270
[ 15.409593][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10
[ 15.409597][ C2] ? lock_acquire+0x32/0xc0
[ 15.409600][ C2] ? run_timer_softirq+0xe6/0x1c0
[ 15.409611][ C2] run_timer_softirq+0xee/0x1c0
[ 15.409616][ C2] handle_softirqs+0x1f6/0x5c0
[ 15.409625][ C2] ? br_device_event+0x627/0x800 [bridge]
[ 15.409656][ C2] do_softirq+0x4d/0xa0
[ 15.409659][ C2]
[ 15.409660][ C2]
[ 15.409662][ C2] __local_bh_enable_ip+0xf6/0x120
[ 15.409667][ C2] br_device_event+0x627/0x800 [bridge]
[ 15.409697][ C2] ? __pfx_br_device_event+0x10/0x10 [bridge]
[ 15.409729][ C2] ? packet_notifier+0x3b0/0x810
[ 15.409739][ C2] notifier_call_chain+0xcd/0x150
[ 15.409751][ C2] netdev_state_change+0xf5/0x120
[ 15.409755][ C2] ? __pfx_netdev_state_change+0x10/0x10
[ 15.409771][ C2] linkwatch_do_dev+0xd2/0x100
[ 15.409775][ C2] __linkwatch_run_queue+0x1df/0x650
[ 15.409782][ C2] ? __pfx___linkwatch_run_queue+0x10/0x10
[ 15.409789][ C2] ? lock_acquire+0x32/0xc0
[ 15.409799][ C2] linkwatch_event+0x40/0x60
[ 15.409801][ C2] process_one_work+0xe55/0x16d0
[ 15.409815][ C2] ? __pfx___lock_release+0x10/0x10
[ 15.409820][ C2] ? __pfx_process_one_work+0x10/0x10
[ 15.409833][ C2] ? assign_work+0x16c/0x240
[ 15.409843][ C2] worker_thread+0x58c/0xce0
[ 15.409857][ C2] ? __pfx_worker_thread+0x10/0x10
[ 15.409863][ C2] kthread+0x359/0x5d0
[ 15.409867][ C2] ? __pfx_kthread+0x10/0x10
[ 15.409876][ C2] ? __pfx_kthread+0x10/0x10
[ 15.409882][ C2] ret_from_fork+0x31/0x70
[ 15.409886][ C2] ? __pfx_kthread+0x10/0x10
[ 15.409889][ C2] ret_from_fork_asm+0x1a/0x30
[ 15.409909][ C2]
[ 15.500968][ T41] br0: port 2(veth2) entered blocking state
[ 15.501392][ T41] br0: port 2(veth2) entered forwarding state
[ 43.801045][ T380] GACT probability NOT on
[ 74.768406][ T596] br1: port 1(veth0) entered blocking state
[ 74.768678][ T596] br1: port 1(veth0) entered disabled state
[ 74.768924][ T596] veth0: entered allmulticast mode
[ 74.770813][ T596] veth0: entered promiscuous mode
[ 74.780476][ T596] ip (596) used greatest stack depth: 23128 bytes left
[ 74.856766][ T597] br1: port 1(veth0) entered blocking state
[ 74.857202][ T597] br1: port 1(veth0) entered forwarding state
[ 77.155755][ T602] veth0: left allmulticast mode
[ 77.155991][ T602] veth0: left promiscuous mode
[ 77.156490][ T602] br1: port 1(veth0) entered disabled state
[ 89.709598][ T718] br0: vlan filtering disabled, automatically disabling multicast vlan snooping
[ 90.268538][ T730] br0: port 2(veth2) entered disabled state
[ 90.344512][ T731] br0: port 1(veth1) entered disabled state
[ 90.441366][ T732] veth2: left allmulticast mode
[ 90.441669][ T732] veth2: left promiscuous mode
[ 90.442006][ T732] br0: port 2(veth2) entered disabled state
[ 90.443734][ T732] veth1: left allmulticast mode
[ 90.444213][ T732] veth1: left promiscuous mode
[ 90.444538][ T732] br0: port 1(veth1) entered disabled state
[ 90.665089][ T733] ip (733) used greatest stack depth: 22992 bytes left