[ 36.241808][ T845] netdevsim netdevsim574 eni574np1: renamed from eth1 [ 36.249683][ T908] netdevsim netdevsim423 eni423np1: renamed from eth0 [ 38.165561][ T936] [ 38.165817][ T936] ============================= [ 38.165995][ T936] WARNING: suspicious RCU usage [ 38.166172][ T936] 6.12.0-rc6-virtme #1 Not tainted [ 38.166367][ T936] ----------------------------- [ 38.166545][ T936] net/core/dev.c:6300 RCU-list traversed in non-reader section!! [ 38.166801][ T936] [ 38.166801][ T936] other info that might help us debug this: [ 38.166801][ T936] [ 38.167139][ T936] [ 38.167139][ T936] rcu_scheduler_active = 2, debug_locks = 1 [ 38.167612][ T936] 2 locks held by busy_poller/936: [ 38.167792][ T936] #0: ffffffffb8459670 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 [ 38.168098][ T936] #1: ffffffffb8402408 (rtnl_mutex){+.+.}-{3:3}, at: netdev_nl_napi_set_doit+0xe4/0x640 [ 38.168429][ T936] [ 38.168429][ T936] stack backtrace: [ 38.168643][ T936] CPU: 3 UID: 0 PID: 936 Comm: busy_poller Not tainted 6.12.0-rc6-virtme #1 [ 38.168949][ T936] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 38.169165][ T936] Call Trace: [ 38.169304][ T936] [ 38.169400][ T936] dump_stack_lvl+0xb0/0xd0 [ 38.169590][ T936] lockdep_rcu_suspicious+0x1ea/0x280 [ 38.169775][ T936] napi_by_id+0x134/0x170 [ 38.169915][ T936] netdev_nl_napi_set_doit+0xeb/0x640 [ 38.170089][ T936] ? __pfx_netdev_nl_napi_set_doit+0x10/0x10 [ 38.170312][ T936] ? __nla_parse+0x26/0x30 [ 38.170489][ T936] ? genl_family_rcv_msg_attrs_parse.constprop.0+0x162/0x240 [ 38.170761][ T936] genl_family_rcv_msg_doit+0x1d4/0x2b0 [ 38.170938][ T936] ? __pfx_genl_family_rcv_msg_doit+0x10/0x10 [ 38.171150][ T936] ? __pfx___lock_release+0x10/0x10 [ 38.171326][ T936] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 38.171513][ T936] ? validate_chain+0x1fe/0xae0 [ 38.171694][ T936] genl_family_rcv_msg+0x347/0x5b0 [ 38.171875][ T936] ? __pfx_genl_family_rcv_msg+0x10/0x10 [ 38.172055][ T936] ? __pfx_netdev_nl_napi_set_doit+0x10/0x10 [ 38.172285][ T936] genl_rcv_msg+0xa3/0x140 [ 38.172463][ T936] netlink_rcv_skb+0x130/0x360 [ 38.172641][ T936] ? __pfx_genl_rcv_msg+0x10/0x10 [ 38.172819][ T936] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 38.173008][ T936] ? genl_rcv+0x19/0x40 [ 38.173141][ T936] ? __pfx_down_read+0x10/0x10 [ 38.173317][ T936] ? netlink_deliver_tap+0x13e/0x340 [ 38.173495][ T936] genl_rcv+0x28/0x40 [ 38.173628][ T936] netlink_unicast+0x44b/0x710 [ 38.173811][ T936] ? __pfx_netlink_unicast+0x10/0x10 [ 38.173987][ T936] ? __wake_up+0x44/0x60 [ 38.174128][ T936] netlink_sendmsg+0x723/0xbe0 [ 38.174310][ T936] ? __pfx_netlink_sendmsg+0x10/0x10 [ 38.174491][ T936] ? fdget+0x52/0x1e0 [ 38.174636][ T936] __sys_sendto+0x377/0x400 [ 38.174816][ T936] ? __pfx___sys_sendto+0x10/0x10 [ 38.175003][ T936] ? do_user_addr_fault+0x972/0xe30 [ 38.175182][ T936] ? __pfx___lock_release+0x10/0x10 [ 38.175352][ T936] ? __up_read+0x1a7/0x780 [ 38.175530][ T936] ? trace_lock_acquire+0x14d/0x1f0 [ 38.175706][ T936] ? __pfx___up_read+0x10/0x10 [ 38.175888][ T936] ? do_user_addr_fault+0x972/0xe30 [ 38.176068][ T936] ? do_user_addr_fault+0x97c/0xe30 [ 38.176247][ T936] __x64_sys_sendto+0xe0/0x1c0 [ 38.176420][ T936] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 38.176638][ T936] do_syscall_64+0xc1/0x1d0 [ 38.176813][ T936] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 38.177031][ T936] RIP: 0033:0x7fdc4fc7e700 [ 38.177213][ T936] 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 [ 38.177834][ T936] RSP: 002b:00007ffe782cf238 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 38.178102][ T936] RAX: ffffffffffffffda RBX: 00007ffe782cf250 RCX: 00007fdc4fc7e700 [ 38.178374][ T936] RDX: 0000000000000034 RSI: 00007fdc4faeb270 RDI: 0000000000000005 [ 38.178634][ T936] RBP: 00007fdc4faeb010 R08: 0000000000000000 R09: 0000000000000000 [ 38.178893][ T936] R10: 0000000000000000 R11: 0000000000000246 R12: 000000001a5e82f0 [ 38.179165][ T936] R13: 00007fdc4faeb010 R14: 000000001a5e8310 R15: 00007fdc4fd79000 [ 38.179442][ T936]