[ 84.970211][ T459] openvswitch: Open vSwitch switching datapath [ 84.983912][ T458] ynl-test: entered promiscuous mode [ 84.992227][ T458] ynl-test: left promiscuous mode [ 88.994825][ T50] [ 88.995118][ T50] ============================= [ 88.995287][ T50] WARNING: suspicious RCU usage [ 88.995448][ T50] 7.0.0-rc3-virtme #1 Not tainted [ 88.995630][ T50] ----------------------------- [ 88.995788][ T50] net/openvswitch/datapath.c:2666 RCU-list traversed in non-reader section!! [ 88.996122][ T50] [ 88.996122][ T50] other info that might help us debug this: [ 88.996122][ T50] [ 88.996388][ T50] [ 88.996388][ T50] rcu_scheduler_active = 2, debug_locks = 1 [ 88.996640][ T50] 3 locks held by kworker/2:1/50: [ 88.996800][ T50] #0: ff11000001139b48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0xcb4/0x1390 [ 88.997092][ T50] #1: ffa000000036fd10 ((work_completion)(&(&ovs_net->masks_rebalance)->work)){+.+.}-{0:0}, at: process_one_work+0xd16/0x1390 [ 88.997420][ T50] #2: ffffffffc08038e8 (ovs_mutex){+.+.}-{4:4}, at: ovs_dp_masks_rebalance+0x29/0x270 [openvswitch] [ 88.997707][ T50] [ 88.997707][ T50] stack backtrace: [ 88.997898][ T50] CPU: 2 UID: 0 PID: 50 Comm: kworker/2:1 Not tainted 7.0.0-rc3-virtme #1 PREEMPT(full) [ 88.997903][ T50] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 88.997904][ T50] Workqueue: events ovs_dp_masks_rebalance [openvswitch] [ 88.997911][ T50] Call Trace: [ 88.997914][ T50] [ 88.997916][ T50] dump_stack_lvl+0x6f/0xa0 [ 88.997921][ T50] lockdep_rcu_suspicious.cold+0x4f/0xad [ 88.997928][ T50] ovs_dp_masks_rebalance+0x226/0x270 [openvswitch] [ 88.997933][ T50] process_one_work+0xd57/0x1390 [ 88.997940][ T50] ? pwq_dec_nr_in_flight+0x700/0x700 [ 88.997942][ T50] ? lock_acquire.part.0+0xbc/0x260 [ 88.997950][ T50] worker_thread+0x4d6/0xd40 [ 88.997954][ T50] ? rescuer_thread+0x1330/0x1330 [ 88.997956][ T50] ? __kthread_parkme+0xb3/0x200 [ 88.997960][ T50] ? rescuer_thread+0x1330/0x1330 [ 88.997962][ T50] kthread+0x30f/0x3f0 [ 88.997964][ T50] ? trace_irq_enable.constprop.0+0x13c/0x190 [ 88.997967][ T50] ? kthread_affine_node+0x150/0x150 [ 88.997970][ T50] ret_from_fork+0x472/0x6b0 [ 88.997974][ T50] ? arch_exit_to_user_mode_prepare.isra.0+0x140/0x140 [ 88.997977][ T50] ? __switch_to+0x538/0xcf0 [ 88.997980][ T50] ? kthread_affine_node+0x150/0x150 [ 88.997983][ T50] ret_from_fork_asm+0x11/0x20 [ 88.997991][ T50]