[ 4350.258666][T10520] netdevsim netdevsim354 eni354np1: renamed from eth0 [ 4350.373793][T10521] netdevsim netdevsim549 eni549np1: renamed from eth1 [ 4352.305170][T10548] [ 4352.305352][T10548] ============================= [ 4352.305579][T10548] WARNING: suspicious RCU usage [ 4352.305781][T10548] 6.12.0-rc6-virtme #1 Not tainted [ 4352.305970][T10548] ----------------------------- [ 4352.306180][T10548] net/core/dev.c:6300 RCU-list traversed in non-reader section!! [ 4352.306455][T10548] [ 4352.306455][T10548] other info that might help us debug this: [ 4352.306455][T10548] [ 4352.306830][T10548] [ 4352.306830][T10548] rcu_scheduler_active = 2, debug_locks = 1 [ 4352.307102][T10548] 2 locks held by busy_poller/10548: [ 4352.307301][T10548] #0: ffffffffaa859db0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 [ 4352.307620][T10548] #1: ffffffffaa802548 (rtnl_mutex){+.+.}-{3:3}, at: netdev_nl_napi_set_doit+0xe4/0x640 [ 4352.307961][T10548] [ 4352.307961][T10548] stack backtrace: [ 4352.308540][T10548] CPU: 2 UID: 0 PID: 10548 Comm: busy_poller Not tainted 6.12.0-rc6-virtme #1 [ 4352.308861][T10548] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 4352.309081][T10548] Call Trace: [ 4352.309219][T10548] [ 4352.309315][T10548] dump_stack_lvl+0xb0/0xd0 [ 4352.309503][T10548] lockdep_rcu_suspicious+0x1ea/0x280 [ 4352.309683][T10548] napi_by_id+0x134/0x170 [ 4352.309826][T10548] netdev_nl_napi_set_doit+0xeb/0x640 [ 4352.310003][T10548] ? __pfx_netdev_nl_napi_set_doit+0x10/0x10 [ 4352.310222][T10548] ? __nla_parse+0x26/0x30 [ 4352.310397][T10548] ? genl_family_rcv_msg_attrs_parse.constprop.0+0x162/0x240 [ 4352.310655][T10548] genl_family_rcv_msg_doit+0x1d4/0x2b0 [ 4352.310833][T10548] ? __pfx_genl_family_rcv_msg_doit+0x10/0x10 [ 4352.311050][T10548] ? __pfx___lock_release+0x10/0x10 [ 4352.311231][T10548] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 4352.311411][T10548] ? validate_chain+0x1fe/0xae0 [ 4352.311593][T10548] genl_family_rcv_msg+0x347/0x5b0 [ 4352.311768][T10548] ? __pfx_genl_family_rcv_msg+0x10/0x10 [ 4352.311943][T10548] ? __pfx_netdev_nl_napi_set_doit+0x10/0x10 [ 4352.312169][T10548] genl_rcv_msg+0xa3/0x140 [ 4352.312348][T10548] netlink_rcv_skb+0x130/0x360 [ 4352.312523][T10548] ? __pfx_genl_rcv_msg+0x10/0x10 [ 4352.312710][T10548] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 4352.312899][T10548] ? genl_rcv+0x19/0x40 [ 4352.313032][T10548] ? __pfx_down_read+0x10/0x10 [ 4352.313213][T10548] ? netlink_deliver_tap+0x13e/0x340 [ 4352.313396][T10548] genl_rcv+0x28/0x40 [ 4352.313528][T10548] netlink_unicast+0x44b/0x710 [ 4352.313708][T10548] ? __pfx_netlink_unicast+0x10/0x10 [ 4352.313885][T10548] ? __wake_up+0x44/0x60 [ 4352.314030][T10548] netlink_sendmsg+0x723/0xbe0 [ 4352.314203][T10548] ? __pfx_netlink_sendmsg+0x10/0x10 [ 4352.314380][T10548] ? fdget+0x52/0x1e0 [ 4352.314548][T10548] __sys_sendto+0x377/0x400 [ 4352.314730][T10548] ? __pfx___sys_sendto+0x10/0x10 [ 4352.314922][T10548] ? do_user_addr_fault+0x972/0xe30 [ 4352.315093][T10548] ? __pfx___lock_release+0x10/0x10 [ 4352.315259][T10548] ? __up_read+0x1a7/0x780 [ 4352.315430][T10548] ? trace_lock_acquire+0x14d/0x1f0 [ 4352.315605][T10548] ? __pfx___up_read+0x10/0x10 [ 4352.315778][T10548] ? do_user_addr_fault+0x972/0xe30 [ 4352.315959][T10548] ? do_user_addr_fault+0x97c/0xe30 [ 4352.316129][T10548] __x64_sys_sendto+0xe0/0x1c0 [ 4352.316295][T10548] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 4352.316498][T10548] do_syscall_64+0xc1/0x1d0 [ 4352.316675][T10548] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 4352.316875][T10548] RIP: 0033:0x7f6bd3366700 [ 4352.317039][T10548] 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 [ 4352.317579][T10548] RSP: 002b:00007ffd2f54be78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 4352.317814][T10548] RAX: ffffffffffffffda RBX: 00007ffd2f54be90 RCX: 00007f6bd3366700 [ 4352.318052][T10548] RDX: 0000000000000034 RSI: 00007f6bd31d3270 RDI: 0000000000000005 [ 4352.318284][T10548] RBP: 00007f6bd31d3010 R08: 0000000000000000 R09: 0000000000000000 [ 4352.318516][T10548] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000d34f2f0 [ 4352.318771][T10548] R13: 00007f6bd31d3010 R14: 000000000d34f310 R15: 00007f6bd3461000 [ 4352.319218][T10548]