[ 4303.494989][T17877] netdevsim netdevsim438 eni438np1: renamed from eth0 [ 4303.600560][T17874] netdevsim netdevsim623 eni623np1: renamed from eth1 [ 4305.600983][T17903] [ 4305.601269][T17903] ============================= [ 4305.601470][T17903] WARNING: suspicious RCU usage [ 4305.601654][T17903] 6.12.0-rc6-virtme #1 Not tainted [ 4305.601857][T17903] ----------------------------- [ 4305.602041][T17903] net/core/dev.c:6300 RCU-list traversed in non-reader section!! [ 4305.602312][T17903] [ 4305.602312][T17903] other info that might help us debug this: [ 4305.602312][T17903] [ 4305.602652][T17903] [ 4305.602652][T17903] rcu_scheduler_active = 2, debug_locks = 1 [ 4305.602911][T17903] 2 locks held by busy_poller/17903: [ 4305.603090][T17903] #0: ffffffff90c594b0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 [ 4305.603756][T17903] #1: ffffffff90c02388 (rtnl_mutex){+.+.}-{3:3}, at: netdev_nl_napi_set_doit+0xe4/0x640 [ 4305.604077][T17903] [ 4305.604077][T17903] stack backtrace: [ 4305.604293][T17903] CPU: 3 UID: 0 PID: 17903 Comm: busy_poller Not tainted 6.12.0-rc6-virtme #1 [ 4305.604601][T17903] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 4305.604821][T17903] Call Trace: [ 4305.604957][T17903] [ 4305.605056][T17903] dump_stack_lvl+0xb0/0xd0 [ 4305.605240][T17903] lockdep_rcu_suspicious+0x1ea/0x280 [ 4305.605422][T17903] napi_by_id+0x134/0x170 [ 4305.605569][T17903] netdev_nl_napi_set_doit+0xeb/0x640 [ 4305.605752][T17903] ? __pfx_netdev_nl_napi_set_doit+0x10/0x10 [ 4305.605984][T17903] ? __nla_parse+0x26/0x30 [ 4305.606170][T17903] ? genl_family_rcv_msg_attrs_parse.constprop.0+0x162/0x240 [ 4305.606450][T17903] genl_family_rcv_msg_doit+0x1d4/0x2b0 [ 4305.606640][T17903] ? __pfx_genl_family_rcv_msg_doit+0x10/0x10 [ 4305.606868][T17903] ? __pfx___lock_release+0x10/0x10 [ 4305.607051][T17903] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 4305.607243][T17903] ? validate_chain+0x1fe/0xae0 [ 4305.607432][T17903] genl_family_rcv_msg+0x347/0x5b0 [ 4305.607621][T17903] ? __pfx_genl_family_rcv_msg+0x10/0x10 [ 4305.607801][T17903] ? __pfx_netdev_nl_napi_set_doit+0x10/0x10 [ 4305.608044][T17903] genl_rcv_msg+0xa3/0x140 [ 4305.608224][T17903] netlink_rcv_skb+0x130/0x360 [ 4305.608406][T17903] ? __pfx_genl_rcv_msg+0x10/0x10 [ 4305.608597][T17903] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 4305.608798][T17903] ? genl_rcv+0x19/0x40 [ 4305.608939][T17903] ? __pfx_down_read+0x10/0x10 [ 4305.609125][T17903] ? netlink_deliver_tap+0x13e/0x340 [ 4305.609318][T17903] genl_rcv+0x28/0x40 [ 4305.609451][T17903] netlink_unicast+0x44b/0x710 [ 4305.609635][T17903] ? __pfx_netlink_unicast+0x10/0x10 [ 4305.609814][T17903] ? __wake_up+0x44/0x60 [ 4305.609955][T17903] netlink_sendmsg+0x723/0xbe0 [ 4305.610146][T17903] ? __pfx_netlink_sendmsg+0x10/0x10 [ 4305.610335][T17903] ? fdget+0x52/0x1e0 [ 4305.610485][T17903] __sys_sendto+0x377/0x400 [ 4305.610673][T17903] ? __pfx___sys_sendto+0x10/0x10 [ 4305.610872][T17903] ? do_user_addr_fault+0x972/0xe30 [ 4305.611063][T17903] ? __pfx___lock_release+0x10/0x10 [ 4305.611241][T17903] ? __up_read+0x1a7/0x780 [ 4305.611428][T17903] ? trace_lock_acquire+0x14d/0x1f0 [ 4305.611607][T17903] ? __pfx___up_read+0x10/0x10 [ 4305.611800][T17903] ? do_user_addr_fault+0x972/0xe30 [ 4305.611976][T17903] ? do_user_addr_fault+0x97c/0xe30 [ 4305.612160][T17903] __x64_sys_sendto+0xe0/0x1c0 [ 4305.612331][T17903] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 4305.612558][T17903] do_syscall_64+0xc1/0x1d0 [ 4305.612738][T17903] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 4305.612957][T17903] RIP: 0033:0x7fa58e1fb700 [ 4305.613159][T17903] 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 [ 4305.613783][T17903] RSP: 002b:00007fffa3f72148 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 4305.614056][T17903] RAX: ffffffffffffffda RBX: 00007fffa3f72160 RCX: 00007fa58e1fb700 [ 4305.614331][T17903] RDX: 0000000000000034 RSI: 00007fa58e068270 RDI: 0000000000000005 [ 4305.614603][T17903] RBP: 00007fa58e068010 R08: 0000000000000000 R09: 0000000000000000 [ 4305.614882][T17903] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000016d2c2f0 [ 4305.615161][T17903] R13: 00007fa58e068010 R14: 0000000016d2c310 R15: 00007fa58e2f6000 [ 4305.615453][T17903]