[ 4354.631766][T10726] netdevsim netdevsim669 eni669np1: renamed from eth1 [ 4354.738107][T10664] netdevsim netdevsim445 eni445np1: renamed from eth0 [ 4356.662236][T10755] [ 4356.662687][T10755] ============================= [ 4356.662856][T10755] WARNING: suspicious RCU usage [ 4356.663040][T10755] 6.12.0-rc6-virtme #1 Not tainted [ 4356.663205][T10755] ----------------------------- [ 4356.663368][T10755] net/core/dev.c:6300 RCU-list traversed in non-reader section!! [ 4356.663618][T10755] [ 4356.663618][T10755] other info that might help us debug this: [ 4356.663618][T10755] [ 4356.663928][T10755] [ 4356.663928][T10755] rcu_scheduler_active = 2, debug_locks = 1 [ 4356.664162][T10755] 2 locks held by busy_poller/10755: [ 4356.664329][T10755] #0: ffffffff86a594b0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 [ 4356.664613][T10755] #1: ffffffff86a02388 (rtnl_mutex){+.+.}-{3:3}, at: netdev_nl_napi_set_doit+0xe4/0x640 [ 4356.664912][T10755] [ 4356.664912][T10755] stack backtrace: [ 4356.665452][T10755] CPU: 0 UID: 0 PID: 10755 Comm: busy_poller Not tainted 6.12.0-rc6-virtme #1 [ 4356.665740][T10755] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 4356.665952][T10755] Call Trace: [ 4356.666079][T10755] [ 4356.666168][T10755] dump_stack_lvl+0xb0/0xd0 [ 4356.666338][T10755] lockdep_rcu_suspicious+0x1ea/0x280 [ 4356.666507][T10755] napi_by_id+0x134/0x170 [ 4356.666631][T10755] netdev_nl_napi_set_doit+0xeb/0x640 [ 4356.666793][T10755] ? __pfx_netdev_nl_napi_set_doit+0x10/0x10 [ 4356.666996][T10755] ? __nla_parse+0x26/0x30 [ 4356.667157][T10755] ? genl_family_rcv_msg_attrs_parse.constprop.0+0x162/0x240 [ 4356.667402][T10755] genl_family_rcv_msg_doit+0x1d4/0x2b0 [ 4356.667564][T10755] ? __pfx_genl_family_rcv_msg_doit+0x10/0x10 [ 4356.667762][T10755] ? __pfx___lock_release+0x10/0x10 [ 4356.667920][T10755] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 4356.668086][T10755] ? validate_chain+0x1fe/0xae0 [ 4356.668254][T10755] genl_family_rcv_msg+0x347/0x5b0 [ 4356.668419][T10755] ? __pfx_genl_family_rcv_msg+0x10/0x10 [ 4356.668584][T10755] ? __pfx_netdev_nl_napi_set_doit+0x10/0x10 [ 4356.668792][T10755] genl_rcv_msg+0xa3/0x140 [ 4356.668956][T10755] netlink_rcv_skb+0x130/0x360 [ 4356.669115][T10755] ? __pfx_genl_rcv_msg+0x10/0x10 [ 4356.669278][T10755] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 4356.669452][T10755] ? genl_rcv+0x19/0x40 [ 4356.669576][T10755] ? __pfx_down_read+0x10/0x10 [ 4356.669740][T10755] ? netlink_deliver_tap+0x13e/0x340 [ 4356.669909][T10755] genl_rcv+0x28/0x40 [ 4356.670031][T10755] netlink_unicast+0x44b/0x710 [ 4356.670195][T10755] ? __pfx_netlink_unicast+0x10/0x10 [ 4356.670361][T10755] ? __wake_up+0x44/0x60 [ 4356.670489][T10755] netlink_sendmsg+0x723/0xbe0 [ 4356.670654][T10755] ? __pfx_netlink_sendmsg+0x10/0x10 [ 4356.670817][T10755] ? fdget+0x52/0x1e0 [ 4356.670949][T10755] __sys_sendto+0x377/0x400 [ 4356.671112][T10755] ? __pfx___sys_sendto+0x10/0x10 [ 4356.671289][T10755] ? do_user_addr_fault+0x972/0xe30 [ 4356.671449][T10755] ? __pfx___lock_release+0x10/0x10 [ 4356.671608][T10755] ? __up_read+0x1a7/0x780 [ 4356.671772][T10755] ? trace_lock_acquire+0x14d/0x1f0 [ 4356.671932][T10755] ? __pfx___up_read+0x10/0x10 [ 4356.672098][T10755] ? do_user_addr_fault+0x972/0xe30 [ 4356.672261][T10755] ? do_user_addr_fault+0x97c/0xe30 [ 4356.672432][T10755] __x64_sys_sendto+0xe0/0x1c0 [ 4356.672596][T10755] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 4356.672796][T10755] do_syscall_64+0xc1/0x1d0 [ 4356.672961][T10755] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 4356.673160][T10755] RIP: 0033:0x7f8adcb27700 [ 4356.673329][T10755] 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 [ 4356.673890][T10755] RSP: 002b:00007fffea7a8298 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 4356.674131][T10755] RAX: ffffffffffffffda RBX: 00007fffea7a82b0 RCX: 00007f8adcb27700 [ 4356.674372][T10755] RDX: 0000000000000034 RSI: 00007f8adc994270 RDI: 0000000000000005 [ 4356.674610][T10755] RBP: 00007f8adc994010 R08: 0000000000000000 R09: 0000000000000000 [ 4356.674850][T10755] R10: 0000000000000000 R11: 0000000000000246 R12: 000000001b6ae2f0 [ 4356.675094][T10755] R13: 00007f8adc994010 R14: 000000001b6ae310 R15: 00007f8adcc22000 [ 4356.675354][T10755]