[ 4291.959685][T13954] netdevsim netdevsim655 eni655np1: renamed from eth1 [ 4292.045269][T13952] netdevsim netdevsim294 eni294np1: renamed from eth0 [ 4294.050479][T13980] [ 4294.050769][T13980] ============================= [ 4294.050941][T13980] WARNING: suspicious RCU usage [ 4294.051108][T13980] 6.12.0-rc6-virtme #1 Not tainted [ 4294.051295][T13980] ----------------------------- [ 4294.051461][T13980] net/core/dev.c:6300 RCU-list traversed in non-reader section!! [ 4294.051704][T13980] [ 4294.051704][T13980] other info that might help us debug this: [ 4294.051704][T13980] [ 4294.052096][T13980] [ 4294.052096][T13980] rcu_scheduler_active = 2, debug_locks = 1 [ 4294.052346][T13980] 2 locks held by busy_poller/13980: [ 4294.052509][T13980] #0: ffffffff8ba59770 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 [ 4294.053089][T13980] #1: ffffffff8ba02408 (rtnl_mutex){+.+.}-{3:3}, at: netdev_nl_napi_set_doit+0xe4/0x640 [ 4294.053401][T13980] [ 4294.053401][T13980] stack backtrace: [ 4294.053600][T13980] CPU: 3 UID: 0 PID: 13980 Comm: busy_poller Not tainted 6.12.0-rc6-virtme #1 [ 4294.053885][T13980] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 4294.054085][T13980] Call Trace: [ 4294.054210][T13980] [ 4294.054299][T13980] dump_stack_lvl+0xb0/0xd0 [ 4294.054473][T13980] lockdep_rcu_suspicious+0x1ea/0x280 [ 4294.054642][T13980] napi_by_id+0x134/0x170 [ 4294.054777][T13980] netdev_nl_napi_set_doit+0xeb/0x640 [ 4294.054939][T13980] ? __pfx_netdev_nl_napi_set_doit+0x10/0x10 [ 4294.055144][T13980] ? __nla_parse+0x26/0x30 [ 4294.055310][T13980] ? genl_family_rcv_msg_attrs_parse.constprop.0+0x162/0x240 [ 4294.055553][T13980] genl_family_rcv_msg_doit+0x1d4/0x2b0 [ 4294.055717][T13980] ? __pfx_genl_family_rcv_msg_doit+0x10/0x10 [ 4294.055917][T13980] ? __pfx___lock_release+0x10/0x10 [ 4294.056089][T13980] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 4294.056260][T13980] ? validate_chain+0x1fe/0xae0 [ 4294.056431][T13980] genl_family_rcv_msg+0x347/0x5b0 [ 4294.056599][T13980] ? __pfx_genl_family_rcv_msg+0x10/0x10 [ 4294.056763][T13980] ? __pfx_netdev_nl_napi_set_doit+0x10/0x10 [ 4294.056979][T13980] genl_rcv_msg+0xa3/0x140 [ 4294.057143][T13980] netlink_rcv_skb+0x130/0x360 [ 4294.057308][T13980] ? __pfx_genl_rcv_msg+0x10/0x10 [ 4294.057468][T13980] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 4294.057646][T13980] ? genl_rcv+0x19/0x40 [ 4294.057768][T13980] ? __pfx_down_read+0x10/0x10 [ 4294.057941][T13980] ? netlink_deliver_tap+0x13e/0x340 [ 4294.058109][T13980] genl_rcv+0x28/0x40 [ 4294.058231][T13980] netlink_unicast+0x44b/0x710 [ 4294.058395][T13980] ? __pfx_netlink_unicast+0x10/0x10 [ 4294.058558][T13980] ? __wake_up+0x44/0x60 [ 4294.058691][T13980] netlink_sendmsg+0x723/0xbe0 [ 4294.058857][T13980] ? __pfx_netlink_sendmsg+0x10/0x10 [ 4294.059024][T13980] ? fdget+0x52/0x1e0 [ 4294.059159][T13980] __sys_sendto+0x377/0x400 [ 4294.059324][T13980] ? __pfx___sys_sendto+0x10/0x10 [ 4294.059495][T13980] ? do_user_addr_fault+0x972/0xe30 [ 4294.059658][T13980] ? __pfx___lock_release+0x10/0x10 [ 4294.059816][T13980] ? __up_read+0x1a7/0x780 [ 4294.059981][T13980] ? trace_lock_acquire+0x14d/0x1f0 [ 4294.060144][T13980] ? __pfx___up_read+0x10/0x10 [ 4294.060314][T13980] ? do_user_addr_fault+0x972/0xe30 [ 4294.060477][T13980] ? do_user_addr_fault+0x97c/0xe30 [ 4294.060639][T13980] __x64_sys_sendto+0xe0/0x1c0 [ 4294.060802][T13980] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 4294.061004][T13980] do_syscall_64+0xc1/0x1d0 [ 4294.061168][T13980] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 4294.061375][T13980] RIP: 0033:0x7fec31283700 [ 4294.061549][T13980] 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 [ 4294.062131][T13980] RSP: 002b:00007ffdffa1bc28 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 4294.062375][T13980] RAX: ffffffffffffffda RBX: 00007ffdffa1bc40 RCX: 00007fec31283700 [ 4294.062621][T13980] RDX: 0000000000000034 RSI: 00007fec310f0270 RDI: 0000000000000005 [ 4294.062863][T13980] RBP: 00007fec310f0010 R08: 0000000000000000 R09: 0000000000000000 [ 4294.063103][T13980] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000351ad2f0 [ 4294.063342][T13980] R13: 00007fec310f0010 R14: 00000000351ad310 R15: 00007fec3137e000 [ 4294.063599][T13980]