[ 4302.517180][ T9076] netdevsim netdevsim624 eni624np1: renamed from eth1 [ 4302.611469][ T9075] netdevsim netdevsim420 eni420np1: renamed from eth0 [ 4304.602877][ T9103] [ 4304.603010][ T9103] ============================= [ 4304.603184][ T9103] WARNING: suspicious RCU usage [ 4304.604626][ T9103] 6.12.0-rc6-virtme #1 Not tainted [ 4304.604805][ T9103] ----------------------------- [ 4304.604982][ T9103] net/core/dev.c:6300 RCU-list traversed in non-reader section!! [ 4304.605232][ T9103] [ 4304.605232][ T9103] other info that might help us debug this: [ 4304.605232][ T9103] [ 4304.605569][ T9103] [ 4304.605569][ T9103] rcu_scheduler_active = 2, debug_locks = 1 [ 4304.605847][ T9103] 2 locks held by busy_poller/9103: [ 4304.606016][ T9103] #0: ffffffffa2c594b0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 [ 4304.606298][ T9103] #1: ffffffffa2c02388 (rtnl_mutex){+.+.}-{3:3}, at: netdev_nl_napi_set_doit+0xe4/0x640 [ 4304.606623][ T9103] [ 4304.606623][ T9103] stack backtrace: [ 4304.606841][ T9103] CPU: 3 UID: 0 PID: 9103 Comm: busy_poller Not tainted 6.12.0-rc6-virtme #1 [ 4304.607157][ T9103] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 4304.607389][ T9103] Call Trace: [ 4304.607522][ T9103] [ 4304.607615][ T9103] dump_stack_lvl+0xb0/0xd0 [ 4304.607791][ T9103] lockdep_rcu_suspicious+0x1ea/0x280 [ 4304.607967][ T9103] napi_by_id+0x134/0x170 [ 4304.608101][ T9103] netdev_nl_napi_set_doit+0xeb/0x640 [ 4304.608275][ T9103] ? __pfx_netdev_nl_napi_set_doit+0x10/0x10 [ 4304.608490][ T9103] ? __nla_parse+0x26/0x30 [ 4304.608674][ T9103] ? genl_family_rcv_msg_attrs_parse.constprop.0+0x162/0x240 [ 4304.608930][ T9103] genl_family_rcv_msg_doit+0x1d4/0x2b0 [ 4304.609103][ T9103] ? __pfx_genl_family_rcv_msg_doit+0x10/0x10 [ 4304.609312][ T9103] ? __pfx___lock_release+0x10/0x10 [ 4304.609481][ T9103] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 4304.609662][ T9103] ? validate_chain+0x1fe/0xae0 [ 4304.609843][ T9103] genl_family_rcv_msg+0x347/0x5b0 [ 4304.610013][ T9103] ? __pfx_genl_family_rcv_msg+0x10/0x10 [ 4304.610181][ T9103] ? __pfx_netdev_nl_napi_set_doit+0x10/0x10 [ 4304.610399][ T9103] genl_rcv_msg+0xa3/0x140 [ 4304.610575][ T9103] netlink_rcv_skb+0x130/0x360 [ 4304.610748][ T9103] ? __pfx_genl_rcv_msg+0x10/0x10 [ 4304.610921][ T9103] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 4304.611112][ T9103] ? genl_rcv+0x19/0x40 [ 4304.611243][ T9103] ? __pfx_down_read+0x10/0x10 [ 4304.611416][ T9103] ? netlink_deliver_tap+0x13e/0x340 [ 4304.611600][ T9103] genl_rcv+0x28/0x40 [ 4304.611729][ T9103] netlink_unicast+0x44b/0x710 [ 4304.611909][ T9103] ? __pfx_netlink_unicast+0x10/0x10 [ 4304.612082][ T9103] ? __wake_up+0x44/0x60 [ 4304.612216][ T9103] netlink_sendmsg+0x723/0xbe0 [ 4304.612392][ T9103] ? __pfx_netlink_sendmsg+0x10/0x10 [ 4304.612570][ T9103] ? fdget+0x52/0x1e0 [ 4304.612709][ T9103] __sys_sendto+0x377/0x400 [ 4304.612883][ T9103] ? __pfx___sys_sendto+0x10/0x10 [ 4304.613064][ T9103] ? do_user_addr_fault+0x972/0xe30 [ 4304.613237][ T9103] ? __pfx___lock_release+0x10/0x10 [ 4304.613409][ T9103] ? __up_read+0x1a7/0x780 [ 4304.613576][ T9103] ? trace_lock_acquire+0x14d/0x1f0 [ 4304.613751][ T9103] ? __pfx___up_read+0x10/0x10 [ 4304.613929][ T9103] ? do_user_addr_fault+0x972/0xe30 [ 4304.614096][ T9103] ? do_user_addr_fault+0x97c/0xe30 [ 4304.614262][ T9103] __x64_sys_sendto+0xe0/0x1c0 [ 4304.614428][ T9103] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 4304.614639][ T9103] do_syscall_64+0xc1/0x1d0 [ 4304.614813][ T9103] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 4304.615025][ T9103] RIP: 0033:0x7f4535644700 [ 4304.615204][ T9103] 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 [ 4304.615805][ T9103] RSP: 002b:00007fff9cf09cf8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 4304.616064][ T9103] RAX: ffffffffffffffda RBX: 00007fff9cf09d10 RCX: 00007f4535644700 [ 4304.616318][ T9103] RDX: 0000000000000034 RSI: 00007f45354b1270 RDI: 0000000000000005 [ 4304.616571][ T9103] RBP: 00007f45354b1010 R08: 0000000000000000 R09: 0000000000000000 [ 4304.616827][ T9103] R10: 0000000000000000 R11: 0000000000000246 R12: 000000001c0bf2f0 [ 4304.617077][ T9103] R13: 00007f45354b1010 R14: 000000001c0bf310 R15: 00007f453573f000 [ 4304.617351][ T9103]