[ 4215.775756][T14789] netdevsim netdevsim505 eni505np1: renamed from eth0 [ 4215.874741][T14787] netdevsim netdevsim567 eni567np1: renamed from eth1 [ 4217.899810][T14815] [ 4217.900124][T14815] ============================= [ 4217.900309][T14815] WARNING: suspicious RCU usage [ 4217.900473][T14815] 6.12.0-rc6-virtme #1 Not tainted [ 4217.900644][T14815] ----------------------------- [ 4217.900813][T14815] net/core/dev.c:6300 RCU-list traversed in non-reader section!! [ 4217.901056][T14815] [ 4217.901056][T14815] other info that might help us debug this: [ 4217.901056][T14815] [ 4217.901611][T14815] [ 4217.901611][T14815] rcu_scheduler_active = 2, debug_locks = 1 [ 4217.901880][T14815] 2 locks held by busy_poller/14815: [ 4217.902046][T14815] #0: ffffffffb4a59670 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 [ 4217.902328][T14815] #1: ffffffffb4a02408 (rtnl_mutex){+.+.}-{3:3}, at: netdev_nl_napi_set_doit+0xe4/0x640 [ 4217.902633][T14815] [ 4217.902633][T14815] stack backtrace: [ 4217.903333][T14815] CPU: 0 UID: 0 PID: 14815 Comm: busy_poller Not tainted 6.12.0-rc6-virtme #1 [ 4217.903621][T14815] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 4217.903822][T14815] Call Trace: [ 4217.903949][T14815] [ 4217.904041][T14815] dump_stack_lvl+0xb0/0xd0 [ 4217.904215][T14815] lockdep_rcu_suspicious+0x1ea/0x280 [ 4217.904390][T14815] napi_by_id+0x134/0x170 [ 4217.904520][T14815] netdev_nl_napi_set_doit+0xeb/0x640 [ 4217.904686][T14815] ? __pfx_netdev_nl_napi_set_doit+0x10/0x10 [ 4217.904890][T14815] ? __nla_parse+0x26/0x30 [ 4217.905054][T14815] ? genl_family_rcv_msg_attrs_parse.constprop.0+0x162/0x240 [ 4217.905308][T14815] genl_family_rcv_msg_doit+0x1d4/0x2b0 [ 4217.905475][T14815] ? __pfx_genl_family_rcv_msg_doit+0x10/0x10 [ 4217.905675][T14815] ? __pfx___lock_release+0x10/0x10 [ 4217.905844][T14815] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 4217.906021][T14815] ? validate_chain+0x1fe/0xae0 [ 4217.906197][T14815] genl_family_rcv_msg+0x347/0x5b0 [ 4217.906361][T14815] ? __pfx_genl_family_rcv_msg+0x10/0x10 [ 4217.906528][T14815] ? __pfx_netdev_nl_napi_set_doit+0x10/0x10 [ 4217.906740][T14815] genl_rcv_msg+0xa3/0x140 [ 4217.906903][T14815] netlink_rcv_skb+0x130/0x360 [ 4217.907069][T14815] ? __pfx_genl_rcv_msg+0x10/0x10 [ 4217.907235][T14815] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 4217.907413][T14815] ? genl_rcv+0x19/0x40 [ 4217.907538][T14815] ? __pfx_down_read+0x10/0x10 [ 4217.907717][T14815] ? netlink_deliver_tap+0x13e/0x340 [ 4217.907887][T14815] genl_rcv+0x28/0x40 [ 4217.908010][T14815] netlink_unicast+0x44b/0x710 [ 4217.908175][T14815] ? __pfx_netlink_unicast+0x10/0x10 [ 4217.908343][T14815] ? __wake_up+0x44/0x60 [ 4217.908478][T14815] netlink_sendmsg+0x723/0xbe0 [ 4217.908645][T14815] ? __pfx_netlink_sendmsg+0x10/0x10 [ 4217.908812][T14815] ? fdget+0x52/0x1e0 [ 4217.908946][T14815] __sys_sendto+0x377/0x400 [ 4217.909113][T14815] ? __pfx___sys_sendto+0x10/0x10 [ 4217.909287][T14815] ? do_user_addr_fault+0x972/0xe30 [ 4217.909454][T14815] ? __pfx___lock_release+0x10/0x10 [ 4217.909619][T14815] ? __up_read+0x1a7/0x780 [ 4217.909790][T14815] ? trace_lock_acquire+0x14d/0x1f0 [ 4217.909955][T14815] ? __pfx___up_read+0x10/0x10 [ 4217.910121][T14815] ? do_user_addr_fault+0x972/0xe30 [ 4217.910283][T14815] ? do_user_addr_fault+0x97c/0xe30 [ 4217.910448][T14815] __x64_sys_sendto+0xe0/0x1c0 [ 4217.910613][T14815] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 4217.910815][T14815] do_syscall_64+0xc1/0x1d0 [ 4217.910982][T14815] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 4217.911190][T14815] RIP: 0033:0x7f1a5f8c4700 [ 4217.911362][T14815] 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 [ 4217.911927][T14815] RSP: 002b:00007ffe2387f0d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 4217.912252][T14815] RAX: ffffffffffffffda RBX: 00007ffe2387f0f0 RCX: 00007f1a5f8c4700 [ 4217.912502][T14815] RDX: 0000000000000034 RSI: 00007f1a5f731270 RDI: 0000000000000005 [ 4217.912743][T14815] RBP: 00007f1a5f731010 R08: 0000000000000000 R09: 0000000000000000 [ 4217.912983][T14815] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000218a42f0 [ 4217.913226][T14815] R13: 00007f1a5f731010 R14: 00000000218a4310 R15: 00007f1a5f9bf000 [ 4217.913493][T14815]