[ 11.246915][ T268] ip (268) used greatest stack depth: 24224 bytes left [ 11.472345][ T277] fab-br0: port 1(fbond) entered blocking state [ 11.472822][ T277] fab-br0: port 1(fbond) entered disabled state [ 11.473213][ T277] fbond: entered allmulticast mode [ 11.474804][ T277] fbond: entered promiscuous mode [ 11.489095][ T277] ip (277) used greatest stack depth: 24032 bytes left [ 11.591513][ T279] veth1-bond: entered promiscuous mode [ 11.591952][ T279] veth1-bond: entered allmulticast mode [ 11.592912][ T279] fbond: (slave veth1-bond): Enslaving as a backup interface with a down link [ 11.677198][ T280] veth2-bond: entered promiscuous mode [ 11.677601][ T280] veth2-bond: entered allmulticast mode [ 11.678152][ T280] fbond: (slave veth2-bond): Enslaving as a backup interface with a down link [ 11.829706][ T12] fbond: (slave veth1-bond): link status definitely up, 10000 Mbps full duplex [ 11.830204][ T12] fbond: Warning: No 802.3ad response from the link partner for any adapters in the bond [ 11.831187][ T12] fbond: active interface up! [ 11.942939][ T284] fab-br0: port 1(fbond) entered blocking state [ 11.943435][ T284] fab-br0: port 1(fbond) entered forwarding state [ 12.036637][ T12] fbond: (slave veth2-bond): link status definitely up, 10000 Mbps full duplex [ 14.162181][ T321] fbond: left allmulticast mode [ 14.162510][ T321] veth1-bond: left allmulticast mode [ 14.162803][ T321] veth2-bond: left allmulticast mode [ 14.163096][ T321] fbond: left promiscuous mode [ 14.164172][ T321] veth1-bond: left promiscuous mode [ 14.164713][ T321] veth2-bond: left promiscuous mode [ 14.165331][ T321] fab-br0: port 1(fbond) entered disabled state [ 14.241811][ T321] ip (321) used greatest stack depth: 23856 bytes left [ 14.602575][ T322] [ 14.602896][ T322] ============================= [ 14.603087][ T322] WARNING: suspicious RCU usage [ 14.603288][ T322] 6.14.0-rc6-virtme #1 Not tainted [ 14.603469][ T322] ----------------------------- [ 14.603647][ T322] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 14.603960][ T322] [ 14.603960][ T322] other info that might help us debug this: [ 14.603960][ T322] [ 14.604329][ T322] [ 14.604329][ T322] rcu_scheduler_active = 2, debug_locks = 1 [ 14.604594][ T322] 3 locks held by ip/322: [ 14.604733][ T322] #0: ffffffff8f20d048 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x221/0xa30 [ 14.605063][ T322] #1: ffff88800a53ad58 (&bond->mode_lock){+...}-{3:3}, at: bond_3ad_unbind_slave+0xaa/0x2070 [ 14.605445][ T322] #2: ffffffff8e95b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x203/0x1850 [ 14.605769][ T322] [ 14.605769][ T322] stack backtrace: [ 14.606010][ T322] CPU: 1 UID: 0 PID: 322 Comm: ip Not tainted 6.14.0-rc6-virtme #1 [ 14.606015][ T322] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 14.606017][ T322] Call Trace: [ 14.606020][ T322] [ 14.606022][ T322] dump_stack_lvl+0xb0/0xd0 [ 14.606029][ T322] lockdep_rcu_suspicious+0x1ea/0x280 [ 14.606041][ T322] dev_hard_start_xmit+0x2fc/0x3f0 [ 14.606053][ T322] __dev_queue_xmit+0xef9/0x1850 [ 14.606069][ T322] ? __pfx___dev_queue_xmit+0x10/0x10 [ 14.606075][ T322] ? __alloc_skb+0x148/0x2e0 [ 14.606081][ T322] ? __pfx___alloc_skb+0x10/0x10 [ 14.606084][ T322] ? bond_3ad_unbind_slave+0xaa/0x2070 [ 14.606093][ T322] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 14.606102][ T322] ? __netdev_alloc_skb+0x43/0x660 [ 14.606111][ T322] ad_lacpdu_send+0x572/0x680 [ 14.606119][ T322] bond_3ad_unbind_slave+0x86e/0x2070 [ 14.606130][ T322] ? __pfx_bond_3ad_unbind_slave+0x10/0x10 [ 14.606134][ T322] ? __pfx_wait_rcu_exp_gp+0x10/0x10 [ 14.606156][ T322] __bond_release_one+0xfa0/0x1560 [ 14.606166][ T322] ? __lock_acquire+0xb9a/0x1680 [ 14.606171][ T322] ? __pfx___bond_release_one+0x10/0x10 [ 14.606183][ T322] ? find_held_lock+0x2c/0x110 [ 14.606190][ T322] ? __lock_release+0x103/0x460 [ 14.606193][ T322] ? packet_notifier+0x3a6/0x810 [ 14.606200][ T322] ? bond_netpoll_cleanup+0x158/0x290 [ 14.606207][ T322] ? __pfx_bond_netpoll_cleanup+0x10/0x10 [ 14.606221][ T322] bond_uninit+0x10c/0x340 [ 14.606226][ T322] ? __pfx_bond_uninit+0x10/0x10 [ 14.606232][ T322] ? notifier_call_chain+0xcd/0x150 [ 14.606244][ T322] unregister_netdevice_many_notify+0x39d/0x19d0 [ 14.606258][ T322] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 14.606261][ T322] ? rtnl_dellink+0x221/0xa30 [ 14.606263][ T322] ? sock_def_readable+0x11e/0x300 [ 14.606269][ T322] ? __pfx___mutex_lock+0x10/0x10 [ 14.606277][ T322] ? rtnl_is_locked+0x15/0x20 [ 14.606280][ T322] ? unregister_netdevice_queue+0x70/0x410 [ 14.606286][ T322] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 14.606290][ T322] ? __nla_validate_parse+0x48/0x3d0 [ 14.606305][ T322] rtnl_dellink+0x341/0xa30 [ 14.606312][ T322] ? __pfx_rtnl_dellink+0x10/0x10 [ 14.606378][ T322] ? find_held_lock+0x2c/0x110 [ 14.606386][ T322] ? __lock_release+0x103/0x460 [ 14.606388][ T322] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 14.606392][ T322] ? __pfx___lock_release+0x10/0x10 [ 14.606396][ T322] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 14.606408][ T322] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 14.606413][ T322] ? __pfx_rtnl_dellink+0x10/0x10 [ 14.606417][ T322] rtnetlink_rcv_msg+0x712/0xc10 [ 14.606425][ T322] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 14.606429][ T322] ? hlock_class+0x4e/0x130 [ 14.606432][ T322] ? mark_lock+0x38/0x3e0 [ 14.606442][ T322] ? __lock_acquire+0xb9a/0x1680 [ 14.606450][ T322] netlink_rcv_skb+0x130/0x360 [ 14.606455][ T322] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 14.606462][ T322] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 14.606485][ T322] ? netlink_deliver_tap+0x13e/0x340 [ 14.606490][ T322] ? netlink_deliver_tap+0xc3/0x340 [ 14.606498][ T322] netlink_unicast+0x44b/0x710 [ 14.606507][ T322] ? __pfx_netlink_unicast+0x10/0x10 [ 14.606512][ T322] ? find_held_lock+0x2c/0x110 [ 14.606523][ T322] netlink_sendmsg+0x723/0xbe0 [ 14.606532][ T322] ? __pfx_netlink_sendmsg+0x10/0x10 [ 14.606550][ T322] ____sys_sendmsg+0x7ac/0xa10 [ 14.606557][ T322] ? __pfx_____sys_sendmsg+0x10/0x10 [ 14.606560][ T322] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 14.606579][ T322] ___sys_sendmsg+0xee/0x170 [ 14.606587][ T322] ? __pfx____sys_sendmsg+0x10/0x10 [ 14.606596][ T322] ? kasan_save_stack+0x34/0x50 [ 14.606600][ T322] ? kasan_save_stack+0x24/0x50 [ 14.606602][ T322] ? kasan_record_aux_stack+0x8c/0xa0 [ 14.606606][ T322] ? __call_rcu_common.constprop.0+0xa1/0x5b0 [ 14.606608][ T322] ? __x64_sys_close+0x7c/0xd0 [ 14.606611][ T322] ? do_syscall_64+0xc1/0x1d0 [ 14.606614][ T322] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 14.606618][ T322] ? __lock_acquire+0xb9a/0x1680 [ 14.606623][ T322] ? lock_downgrade+0xb2/0x110 [ 14.606631][ T322] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 14.606637][ T322] ? find_held_lock+0x2c/0x110 [ 14.606644][ T322] ? __lock_release+0x103/0x460 [ 14.606647][ T322] ? __virt_addr_valid+0x22b/0x430 [ 14.606652][ T322] ? __pfx___lock_release+0x10/0x10 [ 14.606655][ T322] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 14.606665][ T322] __sys_sendmsg+0x109/0x1a0 [ 14.606669][ T322] ? __pfx___sys_sendmsg+0x10/0x10 [ 14.606695][ T322] do_syscall_64+0xc1/0x1d0 [ 14.606701][ T322] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 14.606704][ T322] RIP: 0033:0x7f7e1ff159a7 [ 14.606709][ T322] Code: 0a 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10 [ 14.606712][ T322] RSP: 002b:00007ffdb5943df8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 14.606716][ T322] RAX: ffffffffffffffda RBX: 00007ffdb5944520 RCX: 00007f7e1ff159a7 [ 14.606718][ T322] RDX: 0000000000000000 RSI: 00007ffdb5943e60 RDI: 0000000000000005 [ 14.606720][ T322] RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000078 [ 14.606722][ T322] R10: 00007f7e1fdd3ef8 R11: 0000000000000246 R12: 0000000000000001 [ 14.606724][ T322] R13: 0000000067da3e17 R14: 0000000000498600 R15: 0000000000000000 [ 14.606741][ T322] [ 14.626167][ T322] fbond (unregistering): (slave veth1-bond): Removing an active aggregator [ 14.627124][ T322] fbond (unregistering): (slave veth1-bond): Releasing backup interface [ 14.652913][ T322] fbond (unregistering): (slave veth2-bond): Removing an active aggregator [ 14.653761][ T322] fbond (unregistering): (slave veth2-bond): Releasing backup interface [ 14.674480][ T322] fbond (unregistering): Released all slaves [ 14.704408][ T322] ip (322) used greatest stack depth: 23096 bytes left