[ 4225.061403][T14565] netdevsim netdevsim421 eni421np1: renamed from eth0 [ 4225.160123][T14564] netdevsim netdevsim642 eni642np1: renamed from eth1 [ 4227.202457][T14591] [ 4227.202983][T14591] ============================= [ 4227.203171][T14591] WARNING: suspicious RCU usage [ 4227.203362][T14591] 6.12.0-rc6-virtme #1 Not tainted [ 4227.203554][T14591] ----------------------------- [ 4227.203735][T14591] net/core/dev.c:6300 RCU-list traversed in non-reader section!! [ 4227.204031][T14591] [ 4227.204031][T14591] other info that might help us debug this: [ 4227.204031][T14591] [ 4227.204367][T14591] [ 4227.204367][T14591] rcu_scheduler_active = 2, debug_locks = 1 [ 4227.204635][T14591] 2 locks held by busy_poller/14591: [ 4227.204811][T14591] #0: ffffffff8e259570 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 [ 4227.205632][T14591] #1: ffffffff8e202388 (rtnl_mutex){+.+.}-{3:3}, at: netdev_nl_napi_set_doit+0xe4/0x640 [ 4227.205966][T14591] [ 4227.205966][T14591] stack backtrace: [ 4227.206189][T14591] CPU: 0 UID: 0 PID: 14591 Comm: busy_poller Not tainted 6.12.0-rc6-virtme #1 [ 4227.206489][T14591] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 4227.206708][T14591] Call Trace: [ 4227.206845][T14591] [ 4227.206940][T14591] dump_stack_lvl+0xb0/0xd0 [ 4227.207126][T14591] lockdep_rcu_suspicious+0x1ea/0x280 [ 4227.207326][T14591] napi_by_id+0x134/0x170 [ 4227.207467][T14591] netdev_nl_napi_set_doit+0xeb/0x640 [ 4227.207640][T14591] ? __pfx_netdev_nl_napi_set_doit+0x10/0x10 [ 4227.207865][T14591] ? __nla_parse+0x26/0x30 [ 4227.208045][T14591] ? genl_family_rcv_msg_attrs_parse.constprop.0+0x162/0x240 [ 4227.208309][T14591] genl_family_rcv_msg_doit+0x1d4/0x2b0 [ 4227.208486][T14591] ? __pfx_genl_family_rcv_msg_doit+0x10/0x10 [ 4227.208708][T14591] ? __pfx___lock_release+0x10/0x10 [ 4227.208884][T14591] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 4227.209065][T14591] ? validate_chain+0x1fe/0xae0 [ 4227.209248][T14591] genl_family_rcv_msg+0x347/0x5b0 [ 4227.209428][T14591] ? __pfx_genl_family_rcv_msg+0x10/0x10 [ 4227.209606][T14591] ? __pfx_netdev_nl_napi_set_doit+0x10/0x10 [ 4227.209836][T14591] genl_rcv_msg+0xa3/0x140 [ 4227.210015][T14591] netlink_rcv_skb+0x130/0x360 [ 4227.210188][T14591] ? __pfx_genl_rcv_msg+0x10/0x10 [ 4227.210371][T14591] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 4227.210557][T14591] ? genl_rcv+0x19/0x40 [ 4227.210689][T14591] ? __pfx_down_read+0x10/0x10 [ 4227.210866][T14591] ? netlink_deliver_tap+0x13e/0x340 [ 4227.211049][T14591] genl_rcv+0x28/0x40 [ 4227.211184][T14591] netlink_unicast+0x44b/0x710 [ 4227.211366][T14591] ? __pfx_netlink_unicast+0x10/0x10 [ 4227.211550][T14591] ? __wake_up+0x44/0x60 [ 4227.211692][T14591] netlink_sendmsg+0x723/0xbe0 [ 4227.211883][T14591] ? __pfx_netlink_sendmsg+0x10/0x10 [ 4227.212068][T14591] ? fdget+0x52/0x1e0 [ 4227.212214][T14591] __sys_sendto+0x377/0x400 [ 4227.212388][T14591] ? __pfx___sys_sendto+0x10/0x10 [ 4227.212576][T14591] ? do_user_addr_fault+0x972/0xe30 [ 4227.212759][T14591] ? __pfx___lock_release+0x10/0x10 [ 4227.212933][T14591] ? __up_read+0x1a7/0x780 [ 4227.213110][T14591] ? trace_lock_acquire+0x14d/0x1f0 [ 4227.213294][T14591] ? __pfx___up_read+0x10/0x10 [ 4227.213475][T14591] ? do_user_addr_fault+0x972/0xe30 [ 4227.213652][T14591] ? do_user_addr_fault+0x97c/0xe30 [ 4227.213831][T14591] __x64_sys_sendto+0xe0/0x1c0 [ 4227.214003][T14591] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 4227.214227][T14591] do_syscall_64+0xc1/0x1d0 [ 4227.214408][T14591] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 4227.214628][T14591] RIP: 0033:0x7f543bc48700 [ 4227.214822][T14591] 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 [ 4227.215427][T14591] RSP: 002b:00007ffebf8f49d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 4227.215713][T14591] RAX: ffffffffffffffda RBX: 00007ffebf8f49f0 RCX: 00007f543bc48700 [ 4227.215978][T14591] RDX: 0000000000000034 RSI: 00007f543bab5270 RDI: 0000000000000005 [ 4227.216241][T14591] RBP: 00007f543bab5010 R08: 0000000000000000 R09: 0000000000000000 [ 4227.216503][T14591] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000311f82f0 [ 4227.216772][T14591] R13: 00007f543bab5010 R14: 00000000311f8310 R15: 00007f543bd43000 [ 4227.217061][T14591]