[ 4208.362088][T31873] netdevsim netdevsim415 eni415np1: renamed from eth0 [ 4208.455958][T31872] netdevsim netdevsim593 eni593np1: renamed from eth1 [ 4210.444543][T31900] [ 4210.444793][T31900] ============================= [ 4210.444987][T31900] WARNING: suspicious RCU usage [ 4210.445177][T31900] 6.12.0-rc6-virtme #1 Not tainted [ 4210.445375][T31900] ----------------------------- [ 4210.445560][T31900] net/core/dev.c:6300 RCU-list traversed in non-reader section!! [ 4210.445827][T31900] [ 4210.445827][T31900] other info that might help us debug this: [ 4210.445827][T31900] [ 4210.446177][T31900] [ 4210.446177][T31900] rcu_scheduler_active = 2, debug_locks = 1 [ 4210.446700][T31900] 2 locks held by busy_poller/31900: [ 4210.446893][T31900] #0: ffffffff9dc59670 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 [ 4210.447182][T31900] #1: ffffffff9dc02408 (rtnl_mutex){+.+.}-{3:3}, at: netdev_nl_napi_set_doit+0xe4/0x640 [ 4210.447512][T31900] [ 4210.447512][T31900] stack backtrace: [ 4210.447753][T31900] CPU: 3 UID: 0 PID: 31900 Comm: busy_poller Not tainted 6.12.0-rc6-virtme #1 [ 4210.448081][T31900] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 4210.448298][T31900] Call Trace: [ 4210.448432][T31900] [ 4210.448523][T31900] dump_stack_lvl+0xb0/0xd0 [ 4210.448703][T31900] lockdep_rcu_suspicious+0x1ea/0x280 [ 4210.448886][T31900] napi_by_id+0x134/0x170 [ 4210.449025][T31900] netdev_nl_napi_set_doit+0xeb/0x640 [ 4210.449195][T31900] ? __pfx_netdev_nl_napi_set_doit+0x10/0x10 [ 4210.449416][T31900] ? __nla_parse+0x26/0x30 [ 4210.449614][T31900] ? genl_family_rcv_msg_attrs_parse.constprop.0+0x162/0x240 [ 4210.449880][T31900] genl_family_rcv_msg_doit+0x1d4/0x2b0 [ 4210.450058][T31900] ? __pfx_genl_family_rcv_msg_doit+0x10/0x10 [ 4210.450274][T31900] ? __pfx___lock_release+0x10/0x10 [ 4210.450453][T31900] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 4210.450633][T31900] ? validate_chain+0x1fe/0xae0 [ 4210.450819][T31900] genl_family_rcv_msg+0x347/0x5b0 [ 4210.450998][T31900] ? __pfx_genl_family_rcv_msg+0x10/0x10 [ 4210.451182][T31900] ? __pfx_netdev_nl_napi_set_doit+0x10/0x10 [ 4210.451407][T31900] genl_rcv_msg+0xa3/0x140 [ 4210.451583][T31900] netlink_rcv_skb+0x130/0x360 [ 4210.451754][T31900] ? __pfx_genl_rcv_msg+0x10/0x10 [ 4210.451935][T31900] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 4210.452117][T31900] ? genl_rcv+0x19/0x40 [ 4210.452250][T31900] ? __pfx_down_read+0x10/0x10 [ 4210.452435][T31900] ? netlink_deliver_tap+0x13e/0x340 [ 4210.452613][T31900] genl_rcv+0x28/0x40 [ 4210.452744][T31900] netlink_unicast+0x44b/0x710 [ 4210.452921][T31900] ? __pfx_netlink_unicast+0x10/0x10 [ 4210.453095][T31900] ? __wake_up+0x44/0x60 [ 4210.453234][T31900] netlink_sendmsg+0x723/0xbe0 [ 4210.453409][T31900] ? __pfx_netlink_sendmsg+0x10/0x10 [ 4210.453629][T31900] ? fdget+0x52/0x1e0 [ 4210.453769][T31900] __sys_sendto+0x377/0x400 [ 4210.453963][T31900] ? __pfx___sys_sendto+0x10/0x10 [ 4210.454154][T31900] ? do_user_addr_fault+0x972/0xe30 [ 4210.454330][T31900] ? __pfx___lock_release+0x10/0x10 [ 4210.454501][T31900] ? __up_read+0x1a7/0x780 [ 4210.454682][T31900] ? trace_lock_acquire+0x14d/0x1f0 [ 4210.454858][T31900] ? __pfx___up_read+0x10/0x10 [ 4210.455045][T31900] ? do_user_addr_fault+0x972/0xe30 [ 4210.455221][T31900] ? do_user_addr_fault+0x97c/0xe30 [ 4210.455402][T31900] __x64_sys_sendto+0xe0/0x1c0 [ 4210.455580][T31900] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 4210.455806][T31900] do_syscall_64+0xc1/0x1d0 [ 4210.455986][T31900] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 4210.456206][T31900] RIP: 0033:0x7efc827be700 [ 4210.456395][T31900] 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 [ 4210.457013][T31900] RSP: 002b:00007fff45ad8458 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 4210.457279][T31900] RAX: ffffffffffffffda RBX: 00007fff45ad8470 RCX: 00007efc827be700 [ 4210.457542][T31900] RDX: 0000000000000034 RSI: 00007efc8262b270 RDI: 0000000000000005 [ 4210.457806][T31900] RBP: 00007efc8262b010 R08: 0000000000000000 R09: 0000000000000000 [ 4210.458077][T31900] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000036ef52f0 [ 4210.458333][T31900] R13: 00007efc8262b010 R14: 0000000036ef5310 R15: 00007efc828b9000 [ 4210.458607][T31900]