[ 4279.564122][T13859] netdevsim netdevsim430 eni430np1: renamed from eth0 [ 4279.658279][T13860] netdevsim netdevsim679 eni679np1: renamed from eth1 [ 4281.685710][T13887] [ 4281.686095][T13887] ============================= [ 4281.686295][T13887] WARNING: suspicious RCU usage [ 4281.686485][T13887] 6.12.0-rc6-virtme #1 Not tainted [ 4281.686679][T13887] ----------------------------- [ 4281.687412][T13887] net/core/dev.c:6300 RCU-list traversed in non-reader section!! [ 4281.687712][T13887] [ 4281.687712][T13887] other info that might help us debug this: [ 4281.687712][T13887] [ 4281.688071][T13887] [ 4281.688071][T13887] rcu_scheduler_active = 2, debug_locks = 1 [ 4281.688351][T13887] 2 locks held by busy_poller/13887: [ 4281.688592][T13887] #0: ffffffffafa59f30 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 [ 4281.688914][T13887] #1: ffffffffafa02648 (rtnl_mutex){+.+.}-{3:3}, at: netdev_nl_napi_set_doit+0xe4/0x640 [ 4281.689242][T13887] [ 4281.689242][T13887] stack backtrace: [ 4281.689469][T13887] CPU: 2 UID: 0 PID: 13887 Comm: busy_poller Not tainted 6.12.0-rc6-virtme #1 [ 4281.689779][T13887] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 4281.689995][T13887] Call Trace: [ 4281.690137][T13887] [ 4281.690237][T13887] dump_stack_lvl+0xb0/0xd0 [ 4281.690959][T13887] lockdep_rcu_suspicious+0x1ea/0x280 [ 4281.691142][T13887] napi_by_id+0x134/0x170 [ 4281.691287][T13887] netdev_nl_napi_set_doit+0xeb/0x640 [ 4281.691460][T13887] ? __pfx_netdev_nl_napi_set_doit+0x10/0x10 [ 4281.691687][T13887] ? __nla_parse+0x26/0x30 [ 4281.691870][T13887] ? genl_family_rcv_msg_attrs_parse.constprop.0+0x162/0x240 [ 4281.692122][T13887] genl_family_rcv_msg_doit+0x1d4/0x2b0 [ 4281.692298][T13887] ? __pfx_genl_family_rcv_msg_doit+0x10/0x10 [ 4281.692508][T13887] ? __pfx___lock_release+0x10/0x10 [ 4281.692677][T13887] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 4281.692856][T13887] ? validate_chain+0x1fe/0xae0 [ 4281.693035][T13887] genl_family_rcv_msg+0x347/0x5b0 [ 4281.693210][T13887] ? __pfx_genl_family_rcv_msg+0x10/0x10 [ 4281.693380][T13887] ? __pfx_netdev_nl_napi_set_doit+0x10/0x10 [ 4281.693604][T13887] genl_rcv_msg+0xa3/0x140 [ 4281.693777][T13887] netlink_rcv_skb+0x130/0x360 [ 4281.693954][T13887] ? __pfx_genl_rcv_msg+0x10/0x10 [ 4281.694126][T13887] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 4281.694311][T13887] ? genl_rcv+0x19/0x40 [ 4281.694440][T13887] ? __pfx_down_read+0x10/0x10 [ 4281.694613][T13887] ? netlink_deliver_tap+0x13e/0x340 [ 4281.694789][T13887] genl_rcv+0x28/0x40 [ 4281.694921][T13887] netlink_unicast+0x44b/0x710 [ 4281.695097][T13887] ? __pfx_netlink_unicast+0x10/0x10 [ 4281.695268][T13887] ? __wake_up+0x44/0x60 [ 4281.695402][T13887] netlink_sendmsg+0x723/0xbe0 [ 4281.695576][T13887] ? __pfx_netlink_sendmsg+0x10/0x10 [ 4281.695751][T13887] ? fdget+0x52/0x1e0 [ 4281.695890][T13887] __sys_sendto+0x377/0x400 [ 4281.696064][T13887] ? __pfx___sys_sendto+0x10/0x10 [ 4281.696247][T13887] ? do_user_addr_fault+0x972/0xe30 [ 4281.696425][T13887] ? __pfx___lock_release+0x10/0x10 [ 4281.696593][T13887] ? __up_read+0x1a7/0x780 [ 4281.696763][T13887] ? trace_lock_acquire+0x14d/0x1f0 [ 4281.696931][T13887] ? __pfx___up_read+0x10/0x10 [ 4281.697103][T13887] ? do_user_addr_fault+0x972/0xe30 [ 4281.697274][T13887] ? do_user_addr_fault+0x97c/0xe30 [ 4281.697444][T13887] __x64_sys_sendto+0xe0/0x1c0 [ 4281.697620][T13887] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 4281.697828][T13887] do_syscall_64+0xc1/0x1d0 [ 4281.698000][T13887] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 4281.698211][T13887] RIP: 0033:0x7f386adc1700 [ 4281.698390][T13887] 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 [ 4281.698976][T13887] RSP: 002b:00007ffd540e2268 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 4281.699233][T13887] RAX: ffffffffffffffda RBX: 00007ffd540e2280 RCX: 00007f386adc1700 [ 4281.699483][T13887] RDX: 0000000000000034 RSI: 00007f386ac2e270 RDI: 0000000000000005 [ 4281.699734][T13887] RBP: 00007f386ac2e010 R08: 0000000000000000 R09: 0000000000000000 [ 4281.699987][T13887] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000035e8b2f0 [ 4281.700240][T13887] R13: 00007f386ac2e010 R14: 0000000035e8b310 R15: 00007f386aebc000 [ 4281.700508][T13887]