[ 4335.233544][ T5868] netdevsim netdevsim335 eni335np1: renamed from eth0 [ 4335.349123][ T5870] netdevsim netdevsim659 eni659np1: renamed from eth1 [ 4337.434224][ T5897] [ 4337.434480][ T5897] ============================= [ 4337.434657][ T5897] WARNING: suspicious RCU usage [ 4337.434825][ T5897] 6.12.0-rc6-virtme #1 Not tainted [ 4337.434993][ T5897] ----------------------------- [ 4337.435184][ T5897] net/core/dev.c:6300 RCU-list traversed in non-reader section!! [ 4337.435430][ T5897] [ 4337.435430][ T5897] other info that might help us debug this: [ 4337.435430][ T5897] [ 4337.436047][ T5897] [ 4337.436047][ T5897] rcu_scheduler_active = 2, debug_locks = 1 [ 4337.436332][ T5897] 2 locks held by busy_poller/5897: [ 4337.436497][ T5897] #0: ffffffff93059db0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 [ 4337.436776][ T5897] #1: ffffffff93002548 (rtnl_mutex){+.+.}-{3:3}, at: netdev_nl_napi_set_doit+0xe4/0x640 [ 4337.437092][ T5897] [ 4337.437092][ T5897] stack backtrace: [ 4337.437303][ T5897] CPU: 0 UID: 0 PID: 5897 Comm: busy_poller Not tainted 6.12.0-rc6-virtme #1 [ 4337.437590][ T5897] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 4337.437791][ T5897] Call Trace: [ 4337.437923][ T5897] [ 4337.438014][ T5897] dump_stack_lvl+0xb0/0xd0 [ 4337.438185][ T5897] lockdep_rcu_suspicious+0x1ea/0x280 [ 4337.438368][ T5897] napi_by_id+0x134/0x170 [ 4337.438505][ T5897] netdev_nl_napi_set_doit+0xeb/0x640 [ 4337.438670][ T5897] ? __pfx_netdev_nl_napi_set_doit+0x10/0x10 [ 4337.438878][ T5897] ? __nla_parse+0x26/0x30 [ 4337.439051][ T5897] ? genl_family_rcv_msg_attrs_parse.constprop.0+0x162/0x240 [ 4337.439299][ T5897] genl_family_rcv_msg_doit+0x1d4/0x2b0 [ 4337.439464][ T5897] ? __pfx_genl_family_rcv_msg_doit+0x10/0x10 [ 4337.439667][ T5897] ? __pfx___lock_release+0x10/0x10 [ 4337.439833][ T5897] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 4337.440006][ T5897] ? validate_chain+0x1fe/0xae0 [ 4337.440182][ T5897] genl_family_rcv_msg+0x347/0x5b0 [ 4337.440352][ T5897] ? __pfx_genl_family_rcv_msg+0x10/0x10 [ 4337.440523][ T5897] ? __pfx_netdev_nl_napi_set_doit+0x10/0x10 [ 4337.440737][ T5897] genl_rcv_msg+0xa3/0x140 [ 4337.440910][ T5897] netlink_rcv_skb+0x130/0x360 [ 4337.441073][ T5897] ? __pfx_genl_rcv_msg+0x10/0x10 [ 4337.441253][ T5897] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 4337.441432][ T5897] ? genl_rcv+0x19/0x40 [ 4337.441560][ T5897] ? __pfx_down_read+0x10/0x10 [ 4337.441733][ T5897] ? netlink_deliver_tap+0x13e/0x340 [ 4337.441906][ T5897] genl_rcv+0x28/0x40 [ 4337.442034][ T5897] netlink_unicast+0x44b/0x710 [ 4337.442205][ T5897] ? __pfx_netlink_unicast+0x10/0x10 [ 4337.442381][ T5897] ? __wake_up+0x44/0x60 [ 4337.442543][ T5897] netlink_sendmsg+0x723/0xbe0 [ 4337.442716][ T5897] ? __pfx_netlink_sendmsg+0x10/0x10 [ 4337.442885][ T5897] ? fdget+0x52/0x1e0 [ 4337.443020][ T5897] __sys_sendto+0x377/0x400 [ 4337.443188][ T5897] ? __pfx___sys_sendto+0x10/0x10 [ 4337.443373][ T5897] ? do_user_addr_fault+0x972/0xe30 [ 4337.443539][ T5897] ? __pfx___lock_release+0x10/0x10 [ 4337.443705][ T5897] ? __up_read+0x1a7/0x780 [ 4337.443875][ T5897] ? trace_lock_acquire+0x14d/0x1f0 [ 4337.444038][ T5897] ? __pfx___up_read+0x10/0x10 [ 4337.444208][ T5897] ? do_user_addr_fault+0x972/0xe30 [ 4337.444377][ T5897] ? do_user_addr_fault+0x97c/0xe30 [ 4337.444547][ T5897] __x64_sys_sendto+0xe0/0x1c0 [ 4337.444710][ T5897] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 4337.444915][ T5897] do_syscall_64+0xc1/0x1d0 [ 4337.445087][ T5897] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 4337.445296][ T5897] RIP: 0033:0x7f4af3fe8700 [ 4337.445468][ T5897] 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 [ 4337.446034][ T5897] RSP: 002b:00007ffcbcba3008 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 4337.446290][ T5897] RAX: ffffffffffffffda RBX: 00007ffcbcba3020 RCX: 00007f4af3fe8700 [ 4337.446545][ T5897] RDX: 0000000000000034 RSI: 00007f4af3e55270 RDI: 0000000000000005 [ 4337.446794][ T5897] RBP: 00007f4af3e55010 R08: 0000000000000000 R09: 0000000000000000 [ 4337.447047][ T5897] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000002c0a2f0 [ 4337.447294][ T5897] R13: 00007f4af3e55010 R14: 0000000002c0a310 R15: 00007f4af40e3000 [ 4337.447554][ T5897]