[ 4195.957759][T14779] netdevsim netdevsim280 eni280np1: renamed from eth0 [ 4196.056710][T14781] netdevsim netdevsim756 eni756np1: renamed from eth1 [ 4198.070628][T14808] [ 4198.070762][T14808] ============================= [ 4198.070931][T14808] WARNING: suspicious RCU usage [ 4198.071499][T14808] 6.12.0-rc6-virtme #1 Not tainted [ 4198.071670][T14808] ----------------------------- [ 4198.071835][T14808] net/core/dev.c:6300 RCU-list traversed in non-reader section!! [ 4198.072076][T14808] [ 4198.072076][T14808] other info that might help us debug this: [ 4198.072076][T14808] [ 4198.072573][T14808] [ 4198.072573][T14808] rcu_scheduler_active = 2, debug_locks = 1 [ 4198.072819][T14808] 2 locks held by busy_poller/14808: [ 4198.072990][T14808] #0: ffffffffa8259570 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 [ 4198.073268][T14808] #1: ffffffffa8202388 (rtnl_mutex){+.+.}-{3:3}, at: netdev_nl_napi_set_doit+0xe4/0x640 [ 4198.073559][T14808] [ 4198.073559][T14808] stack backtrace: [ 4198.073770][T14808] CPU: 0 UID: 0 PID: 14808 Comm: busy_poller Not tainted 6.12.0-rc6-virtme #1 [ 4198.074065][T14808] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 4198.074283][T14808] Call Trace: [ 4198.074425][T14808] [ 4198.074515][T14808] dump_stack_lvl+0xb0/0xd0 [ 4198.074691][T14808] lockdep_rcu_suspicious+0x1ea/0x280 [ 4198.074859][T14808] napi_by_id+0x134/0x170 [ 4198.074987][T14808] netdev_nl_napi_set_doit+0xeb/0x640 [ 4198.075150][T14808] ? __pfx_netdev_nl_napi_set_doit+0x10/0x10 [ 4198.075358][T14808] ? __nla_parse+0x26/0x30 [ 4198.075519][T14808] ? genl_family_rcv_msg_attrs_parse.constprop.0+0x162/0x240 [ 4198.075773][T14808] genl_family_rcv_msg_doit+0x1d4/0x2b0 [ 4198.075951][T14808] ? __pfx_genl_family_rcv_msg_doit+0x10/0x10 [ 4198.076151][T14808] ? __pfx___lock_release+0x10/0x10 [ 4198.076312][T14808] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 4198.076496][T14808] ? validate_chain+0x1fe/0xae0 [ 4198.076672][T14808] genl_family_rcv_msg+0x347/0x5b0 [ 4198.076839][T14808] ? __pfx_genl_family_rcv_msg+0x10/0x10 [ 4198.077008][T14808] ? __pfx_netdev_nl_napi_set_doit+0x10/0x10 [ 4198.077224][T14808] genl_rcv_msg+0xa3/0x140 [ 4198.077389][T14808] netlink_rcv_skb+0x130/0x360 [ 4198.077551][T14808] ? __pfx_genl_rcv_msg+0x10/0x10 [ 4198.077724][T14808] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 4198.077916][T14808] ? genl_rcv+0x19/0x40 [ 4198.078048][T14808] ? __pfx_down_read+0x10/0x10 [ 4198.078213][T14808] ? netlink_deliver_tap+0x13e/0x340 [ 4198.078388][T14808] genl_rcv+0x28/0x40 [ 4198.078513][T14808] netlink_unicast+0x44b/0x710 [ 4198.078683][T14808] ? __pfx_netlink_unicast+0x10/0x10 [ 4198.078843][T14808] ? __wake_up+0x44/0x60 [ 4198.078972][T14808] netlink_sendmsg+0x723/0xbe0 [ 4198.079141][T14808] ? __pfx_netlink_sendmsg+0x10/0x10 [ 4198.079308][T14808] ? fdget+0x52/0x1e0 [ 4198.079439][T14808] __sys_sendto+0x377/0x400 [ 4198.079606][T14808] ? __pfx___sys_sendto+0x10/0x10 [ 4198.079786][T14808] ? do_user_addr_fault+0x972/0xe30 [ 4198.079947][T14808] ? __pfx___lock_release+0x10/0x10 [ 4198.080112][T14808] ? __up_read+0x1a7/0x780 [ 4198.080277][T14808] ? trace_lock_acquire+0x14d/0x1f0 [ 4198.080440][T14808] ? __pfx___up_read+0x10/0x10 [ 4198.080623][T14808] ? do_user_addr_fault+0x972/0xe30 [ 4198.080798][T14808] ? do_user_addr_fault+0x97c/0xe30 [ 4198.080980][T14808] __x64_sys_sendto+0xe0/0x1c0 [ 4198.081152][T14808] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 4198.081370][T14808] do_syscall_64+0xc1/0x1d0 [ 4198.081545][T14808] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 4198.081768][T14808] RIP: 0033:0x7f5864230700 [ 4198.081957][T14808] 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 [ 4198.082582][T14808] RSP: 002b:00007fffaf2a0388 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 4198.082851][T14808] RAX: ffffffffffffffda RBX: 00007fffaf2a03a0 RCX: 00007f5864230700 [ 4198.083117][T14808] RDX: 0000000000000034 RSI: 00007f586409d270 RDI: 0000000000000005 [ 4198.083381][T14808] RBP: 00007f586409d010 R08: 0000000000000000 R09: 0000000000000000 [ 4198.083646][T14808] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000aa7e2f0 [ 4198.083921][T14808] R13: 00007f586409d010 R14: 000000000aa7e310 R15: 00007f586432b000 [ 4198.084206][T14808]