[ 4294.045220][T11194] netdevsim netdevsim570 eni570np1: renamed from eth1 [ 4294.146623][T11192] netdevsim netdevsim360 eni360np1: renamed from eth0 [ 4296.219648][T11221] [ 4296.219964][T11221] ============================= [ 4296.220364][T11221] WARNING: suspicious RCU usage [ 4296.220559][T11221] 6.12.0-rc6-virtme #1 Not tainted [ 4296.220744][T11221] ----------------------------- [ 4296.220922][T11221] net/core/dev.c:6300 RCU-list traversed in non-reader section!! [ 4296.221193][T11221] [ 4296.221193][T11221] other info that might help us debug this: [ 4296.221193][T11221] [ 4296.221528][T11221] [ 4296.221528][T11221] rcu_scheduler_active = 2, debug_locks = 1 [ 4296.221780][T11221] 2 locks held by busy_poller/11221: [ 4296.221973][T11221] #0: ffffffffbaa59db0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 [ 4296.222316][T11221] #1: ffffffffbaa02548 (rtnl_mutex){+.+.}-{3:3}, at: netdev_nl_napi_set_doit+0xe4/0x640 [ 4296.222631][T11221] [ 4296.222631][T11221] stack backtrace: [ 4296.223247][T11221] CPU: 2 UID: 0 PID: 11221 Comm: busy_poller Not tainted 6.12.0-rc6-virtme #1 [ 4296.223542][T11221] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 4296.223747][T11221] Call Trace: [ 4296.223879][T11221] [ 4296.223968][T11221] dump_stack_lvl+0xb0/0xd0 [ 4296.224144][T11221] lockdep_rcu_suspicious+0x1ea/0x280 [ 4296.224313][T11221] napi_by_id+0x134/0x170 [ 4296.224439][T11221] netdev_nl_napi_set_doit+0xeb/0x640 [ 4296.224606][T11221] ? __pfx_netdev_nl_napi_set_doit+0x10/0x10 [ 4296.224821][T11221] ? __nla_parse+0x26/0x30 [ 4296.224987][T11221] ? genl_family_rcv_msg_attrs_parse.constprop.0+0x162/0x240 [ 4296.225236][T11221] genl_family_rcv_msg_doit+0x1d4/0x2b0 [ 4296.225401][T11221] ? __pfx_genl_family_rcv_msg_doit+0x10/0x10 [ 4296.225605][T11221] ? __pfx___lock_release+0x10/0x10 [ 4296.225772][T11221] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 4296.225945][T11221] ? validate_chain+0x1fe/0xae0 [ 4296.226125][T11221] genl_family_rcv_msg+0x347/0x5b0 [ 4296.226293][T11221] ? __pfx_genl_family_rcv_msg+0x10/0x10 [ 4296.226460][T11221] ? __pfx_netdev_nl_napi_set_doit+0x10/0x10 [ 4296.226676][T11221] genl_rcv_msg+0xa3/0x140 [ 4296.226848][T11221] netlink_rcv_skb+0x130/0x360 [ 4296.227012][T11221] ? __pfx_genl_rcv_msg+0x10/0x10 [ 4296.227184][T11221] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 4296.227357][T11221] ? genl_rcv+0x19/0x40 [ 4296.227486][T11221] ? __pfx_down_read+0x10/0x10 [ 4296.227652][T11221] ? netlink_deliver_tap+0x13e/0x340 [ 4296.227827][T11221] genl_rcv+0x28/0x40 [ 4296.227952][T11221] netlink_unicast+0x44b/0x710 [ 4296.228119][T11221] ? __pfx_netlink_unicast+0x10/0x10 [ 4296.228289][T11221] ? __wake_up+0x44/0x60 [ 4296.228418][T11221] netlink_sendmsg+0x723/0xbe0 [ 4296.228588][T11221] ? __pfx_netlink_sendmsg+0x10/0x10 [ 4296.228761][T11221] ? fdget+0x52/0x1e0 [ 4296.228901][T11221] __sys_sendto+0x377/0x400 [ 4296.229066][T11221] ? __pfx___sys_sendto+0x10/0x10 [ 4296.229244][T11221] ? do_user_addr_fault+0x972/0xe30 [ 4296.229412][T11221] ? __pfx___lock_release+0x10/0x10 [ 4296.229576][T11221] ? __up_read+0x1a7/0x780 [ 4296.229745][T11221] ? trace_lock_acquire+0x14d/0x1f0 [ 4296.229910][T11221] ? __pfx___up_read+0x10/0x10 [ 4296.230084][T11221] ? do_user_addr_fault+0x972/0xe30 [ 4296.230257][T11221] ? do_user_addr_fault+0x97c/0xe30 [ 4296.230420][T11221] __x64_sys_sendto+0xe0/0x1c0 [ 4296.230583][T11221] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 4296.230787][T11221] do_syscall_64+0xc1/0x1d0 [ 4296.230951][T11221] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 4296.231155][T11221] RIP: 0033:0x7fbfe76d0700 [ 4296.231327][T11221] 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 [ 4296.231900][T11221] RSP: 002b:00007ffc6be47188 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 4296.232154][T11221] RAX: ffffffffffffffda RBX: 00007ffc6be471a0 RCX: 00007fbfe76d0700 [ 4296.232405][T11221] RDX: 0000000000000034 RSI: 00007fbfe753d270 RDI: 0000000000000005 [ 4296.232658][T11221] RBP: 00007fbfe753d010 R08: 0000000000000000 R09: 0000000000000000 [ 4296.232911][T11221] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000354412f0 [ 4296.233151][T11221] R13: 00007fbfe753d010 R14: 0000000035441310 R15: 00007fbfe77cb000 [ 4296.233411][T11221]