[ 11.303007][ T265] ip (265) used greatest stack depth: 23120 bytes left [ 13.201281][ T302] lag1: Mode changed to "loadbalance" [ 13.609742][ T310] lag1: Port device veth0 added [ 13.679742][ T311] lag1: Port device veth6 added [ 14.884824][ T329] lag4: Mode changed to "loadbalance" [ 15.262571][ T336] lag4: Port device veth3 added [ 15.351652][ T337] lag4: Port device veth5 added [ 16.458811][ T355] lag2: Mode changed to "loadbalance" [ 16.822685][ T362] lag2: Port device veth1 added [ 16.830488][ T302] [ 16.830700][ T302] ============================= [ 16.830919][ T302] WARNING: suspicious RCU usage [ 16.831091][ T302] 6.14.0-rc6-virtme #1 Not tainted [ 16.831321][ T302] ----------------------------- [ 16.831534][ T302] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 16.831870][ T302] [ 16.831870][ T302] other info that might help us debug this: [ 16.831870][ T302] [ 16.832274][ T302] [ 16.832274][ T302] rcu_scheduler_active = 2, debug_locks = 1 [ 16.832544][ T302] 1 lock held by teamd/302: [ 16.832758][ T302] #0: ffffffffb915b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 16.833106][ T302] [ 16.833106][ T302] stack backtrace: [ 16.833381][ T302] CPU: 2 UID: 0 PID: 302 Comm: teamd Not tainted 6.14.0-rc6-virtme #1 [ 16.833386][ T302] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 16.833388][ T302] Call Trace: [ 16.833390][ T302] [ 16.833392][ T302] dump_stack_lvl+0xb0/0xd0 [ 16.833401][ T302] lockdep_rcu_suspicious+0x1ea/0x280 [ 16.833411][ T302] dev_hard_start_xmit+0x2fc/0x3f0 [ 16.833422][ T302] __dev_queue_xmit+0xfaf/0x18d0 [ 16.833436][ T302] ? __pfx___dev_queue_xmit+0x10/0x10 [ 16.833441][ T302] ? packet_parse_headers+0x231/0x9c0 [ 16.833449][ T302] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 16.833455][ T302] ? __pfx_packet_parse_headers+0x10/0x10 [ 16.833460][ T302] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 16.833466][ T302] ? packet_cached_dev_get+0xd5/0x210 [ 16.833475][ T302] packet_snd+0xd0c/0x19d0 [ 16.833489][ T302] ? __pfx_packet_snd+0x10/0x10 [ 16.833496][ T302] ? build_sched_domains+0x14d0/0x1690 [ 16.833504][ T302] ? __lock_release+0x103/0x460 [ 16.833508][ T302] ? __might_fault+0x11b/0x170 [ 16.833514][ T302] ? __pfx___lock_release+0x10/0x10 [ 16.833527][ T302] __sys_sendto+0x3c3/0x450 [ 16.833537][ T302] ? __pfx___sys_sendto+0x10/0x10 [ 16.833540][ T302] ? __might_fault+0x11b/0x170 [ 16.833565][ T302] ? __sys_getsockname+0x150/0x1f0 [ 16.833573][ T302] ? __pfx___sys_getsockname+0x10/0x10 [ 16.833581][ T302] ? __pfx___up_read+0x10/0x10 [ 16.833596][ T302] ? do_user_addr_fault+0x972/0xe30 [ 16.833609][ T302] ? do_user_addr_fault+0x97c/0xe30 [ 16.833622][ T302] __x64_sys_sendto+0xe0/0x1c0 [ 16.833628][ T302] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 16.833634][ T302] do_syscall_64+0xc1/0x1d0 [ 16.833641][ T302] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 16.833647][ T302] RIP: 0033:0x7fc3678ff8f0 [ 16.833651][ T302] Code: ff ff 64 89 02 eb bd 0f 1f 00 f3 0f 1e fa 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 1d 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 68 c3 0f 1f 80 00 00 00 00 41 54 48 83 ec 20 [ 16.833654][ T302] RSP: 002b:00007ffcbf694ad8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 16.833658][ T302] RAX: ffffffffffffffda RBX: 000000000ca30740 RCX: 00007fc3678ff8f0 [ 16.833660][ T302] RDX: 000000000000007c RSI: 00007ffcbf694b50 RDI: 0000000000000006 [ 16.833662][ T302] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 16.833664][ T302] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000007c [ 16.833665][ T302] R13: 00007ffcbf694b50 R14: 0000000000000006 R15: 000000000ca30c90 [ 16.833681][ T302] [ 16.916634][ T363] lag2: Port device veth7 added [ 17.373640][ T369] br1: port 1(lag2) entered blocking state [ 17.374090][ T369] br1: port 1(lag2) entered disabled state [ 17.375063][ T369] lag2: entered allmulticast mode [ 17.375389][ T369] veth1: entered allmulticast mode [ 17.375662][ T369] veth7: entered allmulticast mode [ 17.378549][ T369] veth1: entered promiscuous mode [ 17.378883][ T369] veth7: entered promiscuous mode [ 17.604798][ T373] br1: port 1(lag2) entered blocking state [ 17.605233][ T373] br1: port 1(lag2) entered forwarding state [ 17.936358][ T379] lag3: Mode changed to "loadbalance" [ 18.334607][ T386] lag3: Port device veth2 added [ 18.426291][ T387] lag3: Port device veth4 added [ 27.781230][ T451] veth7: left allmulticast mode [ 27.783270][ T451] lag2: Port device veth7 removed [ 27.857568][ T452] veth7: left promiscuous mode [ 40.997035][ T502] veth7: entered allmulticast mode [ 40.997393][ T502] veth7: entered promiscuous mode [ 40.998417][ T502] lag2: Port device veth7 added [ 41.323069][ T513] veth1: left allmulticast mode [ 41.324958][ T513] lag2: Port device veth1 removed [ 41.411541][ T514] veth1: left promiscuous mode [ 54.497739][ T345] br1: port 1(lag2) entered disabled state [ 54.569133][ T564] veth7: left allmulticast mode [ 54.578472][ T564] lag2: Port device veth7 removed [ 54.648728][ T565] veth7: left promiscuous mode [ 54.900147][ T575] veth1: entered allmulticast mode [ 54.900382][ T575] veth1: entered promiscuous mode [ 54.902497][ T575] lag2: Port device veth1 added [ 54.918562][ T345] br1: port 1(lag2) entered blocking state [ 54.918845][ T345] br1: port 1(lag2) entered forwarding state [ 55.234806][ T586] veth7: entered allmulticast mode [ 55.235033][ T586] veth7: entered promiscuous mode [ 55.235909][ T586] lag2: Port device veth7 added [ 68.371927][ T636] lag2: left allmulticast mode [ 68.372172][ T636] veth1: left allmulticast mode [ 68.372361][ T636] veth7: left allmulticast mode [ 68.372634][ T636] veth1: left promiscuous mode [ 68.372855][ T636] veth7: left promiscuous mode [ 68.373041][ T636] br1: port 1(lag2) entered disabled state [ 70.504843][ T638] br1: port 1(lag2) entered blocking state [ 70.505160][ T638] br1: port 1(lag2) entered disabled state [ 70.505531][ T638] lag2: entered allmulticast mode [ 70.505810][ T638] veth1: entered allmulticast mode [ 70.506101][ T638] veth7: entered allmulticast mode [ 70.509481][ T638] veth1: entered promiscuous mode [ 70.509847][ T638] veth7: entered promiscuous mode [ 70.511367][ T638] br1: port 1(lag2) entered blocking state [ 70.511787][ T638] br1: port 1(lag2) entered forwarding state [ 83.703513][ T688] lag3: Port device veth2 removed [ 96.934886][ T739] lag3: Port device veth2 added [ 97.244562][ T750] lag3: Port device veth4 removed [ 110.487223][ T801] lag3: Port device veth2 removed [ 110.787553][ T812] lag3: Port device veth4 added [ 111.100561][ T823] lag3: Port device veth2 added [ 124.260796][ T873] br1: port 2(lag3) entered blocking state [ 124.261107][ T873] br1: port 2(lag3) entered disabled state [ 124.261405][ T873] lag3: entered allmulticast mode [ 124.261591][ T873] veth4: entered allmulticast mode [ 124.261778][ T873] veth2: entered allmulticast mode [ 124.263730][ T873] lag3: entered promiscuous mode [ 124.263948][ T873] veth4: entered promiscuous mode [ 124.264500][ T873] veth2: entered promiscuous mode [ 124.265093][ T873] lag2: entered promiscuous mode [ 124.266887][ T873] br1: port 2(lag3) entered blocking state [ 124.267171][ T873] br1: port 2(lag3) entered forwarding state [ 126.396263][ T875] lag3: left allmulticast mode [ 126.396610][ T875] veth4: left allmulticast mode [ 126.396811][ T875] veth2: left allmulticast mode [ 126.397008][ T875] lag3: left promiscuous mode [ 126.397247][ T875] veth4: left promiscuous mode [ 126.397718][ T875] veth2: left promiscuous mode [ 126.398326][ T875] br1: port 2(lag3) entered disabled state [ 126.399496][ T875] lag2: left promiscuous mode [ 139.966365][ T928] lag3: Port device veth4 removed [ 140.043716][ T929] lag3: Port device veth2 removed [ 140.913985][ T151] br1: port 1(lag2) entered disabled state [ 141.097662][ T944] lag2: left allmulticast mode [ 141.097914][ T944] veth1: left allmulticast mode [ 141.098134][ T944] veth7: left allmulticast mode [ 141.098381][ T944] br1: port 1(lag2) entered disabled state [ 141.325615][ T946] lag2: Port device veth7 removed [ 141.410747][ T947] lag2: Port device veth1 removed [ 142.936308][ T960] lag4: Port device veth5 removed [ 143.022746][ T961] lag4: Port device veth3 removed [ 144.611355][ T976] lag1: Port device veth6 removed [ 144.699262][ T977] lag1: Port device veth0 removed