[ 4358.080888][ T5447] netdevsim netdevsim394 eni394np1: renamed from eth0 [ 4358.179119][ T5448] netdevsim netdevsim628 eni628np1: renamed from eth1 [ 4360.165459][ T5475] [ 4360.165589][ T5475] ============================= [ 4360.165767][ T5475] WARNING: suspicious RCU usage [ 4360.166282][ T5475] 6.12.0-rc6-virtme #1 Not tainted [ 4360.166465][ T5475] ----------------------------- [ 4360.166637][ T5475] net/core/dev.c:6300 RCU-list traversed in non-reader section!! [ 4360.166889][ T5475] [ 4360.166889][ T5475] other info that might help us debug this: [ 4360.166889][ T5475] [ 4360.167214][ T5475] [ 4360.167214][ T5475] rcu_scheduler_active = 2, debug_locks = 1 [ 4360.167468][ T5475] 2 locks held by busy_poller/5475: [ 4360.167639][ T5475] #0: ffffffff9fe594b0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 [ 4360.167923][ T5475] #1: ffffffff9fe02388 (rtnl_mutex){+.+.}-{3:3}, at: netdev_nl_napi_set_doit+0xe4/0x640 [ 4360.168223][ T5475] [ 4360.168223][ T5475] stack backtrace: [ 4360.168581][ T5475] CPU: 3 UID: 0 PID: 5475 Comm: busy_poller Not tainted 6.12.0-rc6-virtme #1 [ 4360.168871][ T5475] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 4360.169082][ T5475] Call Trace: [ 4360.169215][ T5475] [ 4360.169305][ T5475] dump_stack_lvl+0xb0/0xd0 [ 4360.169491][ T5475] lockdep_rcu_suspicious+0x1ea/0x280 [ 4360.169681][ T5475] napi_by_id+0x134/0x170 [ 4360.169816][ T5475] netdev_nl_napi_set_doit+0xeb/0x640 [ 4360.169984][ T5475] ? __pfx_netdev_nl_napi_set_doit+0x10/0x10 [ 4360.170196][ T5475] ? __nla_parse+0x26/0x30 [ 4360.170364][ T5475] ? genl_family_rcv_msg_attrs_parse.constprop.0+0x162/0x240 [ 4360.170622][ T5475] genl_family_rcv_msg_doit+0x1d4/0x2b0 [ 4360.170792][ T5475] ? __pfx_genl_family_rcv_msg_doit+0x10/0x10 [ 4360.170996][ T5475] ? __pfx___lock_release+0x10/0x10 [ 4360.171160][ T5475] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 4360.171332][ T5475] ? validate_chain+0x1fe/0xae0 [ 4360.171506][ T5475] genl_family_rcv_msg+0x347/0x5b0 [ 4360.171681][ T5475] ? __pfx_genl_family_rcv_msg+0x10/0x10 [ 4360.171843][ T5475] ? __pfx_netdev_nl_napi_set_doit+0x10/0x10 [ 4360.172056][ T5475] genl_rcv_msg+0xa3/0x140 [ 4360.172245][ T5475] netlink_rcv_skb+0x130/0x360 [ 4360.172409][ T5475] ? __pfx_genl_rcv_msg+0x10/0x10 [ 4360.172576][ T5475] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 4360.172971][ T5475] ? genl_rcv+0x19/0x40 [ 4360.173107][ T5475] ? __pfx_down_read+0x10/0x10 [ 4360.173279][ T5475] ? netlink_deliver_tap+0x13e/0x340 [ 4360.173449][ T5475] genl_rcv+0x28/0x40 [ 4360.173575][ T5475] netlink_unicast+0x44b/0x710 [ 4360.173753][ T5475] ? __pfx_netlink_unicast+0x10/0x10 [ 4360.173929][ T5475] ? __wake_up+0x44/0x60 [ 4360.174064][ T5475] netlink_sendmsg+0x723/0xbe0 [ 4360.174248][ T5475] ? __pfx_netlink_sendmsg+0x10/0x10 [ 4360.174429][ T5475] ? fdget+0x52/0x1e0 [ 4360.174575][ T5475] __sys_sendto+0x377/0x400 [ 4360.174751][ T5475] ? __pfx___sys_sendto+0x10/0x10 [ 4360.174934][ T5475] ? do_user_addr_fault+0x972/0xe30 [ 4360.175105][ T5475] ? __pfx___lock_release+0x10/0x10 [ 4360.175284][ T5475] ? __up_read+0x1a7/0x780 [ 4360.175452][ T5475] ? trace_lock_acquire+0x14d/0x1f0 [ 4360.175620][ T5475] ? __pfx___up_read+0x10/0x10 [ 4360.175795][ T5475] ? do_user_addr_fault+0x972/0xe30 [ 4360.175971][ T5475] ? do_user_addr_fault+0x97c/0xe30 [ 4360.176143][ T5475] __x64_sys_sendto+0xe0/0x1c0 [ 4360.176312][ T5475] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 4360.176525][ T5475] do_syscall_64+0xc1/0x1d0 [ 4360.176706][ T5475] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 4360.176913][ T5475] RIP: 0033:0x7fe741917700 [ 4360.177085][ T5475] 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 [ 4360.177672][ T5475] RSP: 002b:00007ffd7058e868 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 4360.177944][ T5475] RAX: ffffffffffffffda RBX: 00007ffd7058e880 RCX: 00007fe741917700 [ 4360.178203][ T5475] RDX: 0000000000000034 RSI: 00007fe741784270 RDI: 0000000000000005 [ 4360.178472][ T5475] RBP: 00007fe741784010 R08: 0000000000000000 R09: 0000000000000000 [ 4360.178745][ T5475] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000035ca82f0 [ 4360.179001][ T5475] R13: 00007fe741784010 R14: 0000000035ca8310 R15: 00007fe741a12000 [ 4360.179276][ T5475]