[ 12.160031][ T277] fab-br0: port 1(fbond) entered blocking state [ 12.160455][ T277] fab-br0: port 1(fbond) entered disabled state [ 12.160864][ T277] fbond: entered allmulticast mode [ 12.162823][ T277] fbond: entered promiscuous mode [ 12.309887][ T280] veth1-bond: entered promiscuous mode [ 12.310655][ T280] veth1-bond: entered allmulticast mode [ 12.311541][ T280] fbond: (slave veth1-bond): Enslaving as a backup interface with a down link [ 12.400256][ T281] veth2-bond: entered promiscuous mode [ 12.400642][ T281] veth2-bond: entered allmulticast mode [ 12.401130][ T281] fbond: (slave veth2-bond): Enslaving as a backup interface with a down link [ 12.522831][ T67] fbond: (slave veth1-bond): link status definitely up, 10000 Mbps full duplex [ 12.523308][ T67] fbond: Warning: No 802.3ad response from the link partner for any adapters in the bond [ 12.524087][ T67] fbond: active interface up! [ 12.666538][ T284] fab-br0: port 1(fbond) entered blocking state [ 12.666975][ T284] fab-br0: port 1(fbond) entered forwarding state [ 12.730739][ T67] fbond: (slave veth2-bond): link status definitely up, 10000 Mbps full duplex [ 14.877515][ T322] fbond: left allmulticast mode [ 14.877772][ T322] veth1-bond: left allmulticast mode [ 14.877961][ T322] veth2-bond: left allmulticast mode [ 14.878143][ T322] fbond: left promiscuous mode [ 14.878719][ T322] veth1-bond: left promiscuous mode [ 14.879116][ T322] veth2-bond: left promiscuous mode [ 14.879654][ T322] fab-br0: port 1(fbond) entered disabled state [ 14.946642][ T322] ip (322) used greatest stack depth: 23448 bytes left [ 15.319571][ T323] [ 15.319816][ T323] ============================= [ 15.320021][ T323] WARNING: suspicious RCU usage [ 15.320209][ T323] 6.14.0-rc6-virtme #1 Not tainted [ 15.320389][ T323] ----------------------------- [ 15.320555][ T323] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 15.320846][ T323] [ 15.320846][ T323] other info that might help us debug this: [ 15.320846][ T323] [ 15.321192][ T323] [ 15.321192][ T323] rcu_scheduler_active = 2, debug_locks = 1 [ 15.321461][ T323] 3 locks held by ip/323: [ 15.321595][ T323] #0: ffffffffbce0d048 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x221/0xa30 [ 15.321922][ T323] #1: ffff88800ba82d58 (&bond->mode_lock){+...}-{3:3}, at: bond_3ad_unbind_slave+0xaa/0x2070 [ 15.322279][ T323] #2: ffffffffbc55b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x203/0x1850 [ 15.322587][ T323] [ 15.322587][ T323] stack backtrace: [ 15.322802][ T323] CPU: 3 UID: 0 PID: 323 Comm: ip Not tainted 6.14.0-rc6-virtme #1 [ 15.322807][ T323] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 15.322809][ T323] Call Trace: [ 15.322811][ T323] [ 15.322813][ T323] dump_stack_lvl+0xb0/0xd0 [ 15.322820][ T323] lockdep_rcu_suspicious+0x1ea/0x280 [ 15.322832][ T323] dev_hard_start_xmit+0x2fc/0x3f0 [ 15.322844][ T323] __dev_queue_xmit+0xef9/0x1850 [ 15.322860][ T323] ? __pfx___dev_queue_xmit+0x10/0x10 [ 15.322866][ T323] ? __alloc_skb+0x148/0x2e0 [ 15.322873][ T323] ? __pfx___alloc_skb+0x10/0x10 [ 15.322876][ T323] ? bond_3ad_unbind_slave+0xaa/0x2070 [ 15.322884][ T323] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 15.322894][ T323] ? __netdev_alloc_skb+0x43/0x660 [ 15.322902][ T323] ad_lacpdu_send+0x572/0x680 [ 15.322910][ T323] bond_3ad_unbind_slave+0x86e/0x2070 [ 15.322922][ T323] ? __pfx_bond_3ad_unbind_slave+0x10/0x10 [ 15.322925][ T323] ? __pfx_wait_rcu_exp_gp+0x10/0x10 [ 15.322943][ T323] __bond_release_one+0xfa0/0x1560 [ 15.322953][ T323] ? __lock_acquire+0xb9a/0x1680 [ 15.322958][ T323] ? __pfx___bond_release_one+0x10/0x10 [ 15.322970][ T323] ? find_held_lock+0x2c/0x110 [ 15.322977][ T323] ? __lock_release+0x103/0x460 [ 15.322979][ T323] ? packet_notifier+0x3a6/0x810 [ 15.322987][ T323] ? bond_netpoll_cleanup+0x158/0x290 [ 15.322994][ T323] ? __pfx_bond_netpoll_cleanup+0x10/0x10 [ 15.323008][ T323] bond_uninit+0x10c/0x340 [ 15.323013][ T323] ? __pfx_bond_uninit+0x10/0x10 [ 15.323019][ T323] ? notifier_call_chain+0xcd/0x150 [ 15.323031][ T323] unregister_netdevice_many_notify+0x39d/0x19d0 [ 15.323045][ T323] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 15.323048][ T323] ? rtnl_dellink+0x221/0xa30 [ 15.323050][ T323] ? sock_def_readable+0x11e/0x300 [ 15.323056][ T323] ? __pfx___mutex_lock+0x10/0x10 [ 15.323065][ T323] ? rtnl_is_locked+0x15/0x20 [ 15.323068][ T323] ? unregister_netdevice_queue+0x70/0x410 [ 15.323074][ T323] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 15.323078][ T323] ? __nla_validate_parse+0x48/0x3d0 [ 15.323092][ T323] rtnl_dellink+0x341/0xa30 [ 15.323100][ T323] ? __pfx_rtnl_dellink+0x10/0x10 [ 15.323168][ T323] ? find_held_lock+0x2c/0x110 [ 15.323175][ T323] ? __lock_release+0x103/0x460 [ 15.323177][ T323] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 15.323182][ T323] ? __pfx___lock_release+0x10/0x10 [ 15.323185][ T323] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 15.323197][ T323] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 15.323201][ T323] ? __pfx_rtnl_dellink+0x10/0x10 [ 15.323206][ T323] rtnetlink_rcv_msg+0x712/0xc10 [ 15.323213][ T323] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 15.323217][ T323] ? hlock_class+0x4e/0x130 [ 15.323221][ T323] ? mark_lock+0x38/0x3e0 [ 15.323231][ T323] ? __lock_acquire+0xb9a/0x1680 [ 15.323239][ T323] netlink_rcv_skb+0x130/0x360 [ 15.323244][ T323] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 15.323251][ T323] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 15.323274][ T323] ? netlink_deliver_tap+0x13e/0x340 [ 15.323280][ T323] ? netlink_deliver_tap+0xc3/0x340 [ 15.323287][ T323] netlink_unicast+0x44b/0x710 [ 15.323296][ T323] ? __pfx_netlink_unicast+0x10/0x10 [ 15.323301][ T323] ? find_held_lock+0x2c/0x110 [ 15.323312][ T323] netlink_sendmsg+0x723/0xbe0 [ 15.323322][ T323] ? __pfx_netlink_sendmsg+0x10/0x10 [ 15.323339][ T323] ____sys_sendmsg+0x7ac/0xa10 [ 15.323346][ T323] ? __pfx_____sys_sendmsg+0x10/0x10 [ 15.323349][ T323] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 15.323368][ T323] ___sys_sendmsg+0xee/0x170 [ 15.323376][ T323] ? __pfx____sys_sendmsg+0x10/0x10 [ 15.323384][ T323] ? kasan_save_stack+0x34/0x50 [ 15.323388][ T323] ? kasan_save_stack+0x24/0x50 [ 15.323391][ T323] ? kasan_record_aux_stack+0x8c/0xa0 [ 15.323394][ T323] ? __call_rcu_common.constprop.0+0xa1/0x5b0 [ 15.323397][ T323] ? __x64_sys_close+0x7c/0xd0 [ 15.323400][ T323] ? do_syscall_64+0xc1/0x1d0 [ 15.323403][ T323] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 15.323408][ T323] ? __lock_acquire+0xb9a/0x1680 [ 15.323412][ T323] ? lock_downgrade+0xb2/0x110 [ 15.323420][ T323] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 15.323426][ T323] ? find_held_lock+0x2c/0x110 [ 15.323434][ T323] ? __lock_release+0x103/0x460 [ 15.323436][ T323] ? __virt_addr_valid+0x22b/0x430 [ 15.323441][ T323] ? __pfx___lock_release+0x10/0x10 [ 15.323444][ T323] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 15.323454][ T323] __sys_sendmsg+0x109/0x1a0 [ 15.323459][ T323] ? __pfx___sys_sendmsg+0x10/0x10 [ 15.323484][ T323] do_syscall_64+0xc1/0x1d0 [ 15.323490][ T323] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 15.323493][ T323] RIP: 0033:0x7f1f466279a7 [ 15.323498][ T323] 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 [ 15.323501][ T323] RSP: 002b:00007ffe9a6331c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 15.323505][ T323] RAX: ffffffffffffffda RBX: 00007ffe9a6338f0 RCX: 00007f1f466279a7 [ 15.323507][ T323] RDX: 0000000000000000 RSI: 00007ffe9a633230 RDI: 0000000000000005 [ 15.323509][ T323] RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000078 [ 15.323510][ T323] R10: 00007f1f464e5ef8 R11: 0000000000000246 R12: 0000000000000001 [ 15.323512][ T323] R13: 0000000067dab910 R14: 0000000000498600 R15: 0000000000000000 [ 15.323530][ T323] [ 15.341527][ T323] fbond (unregistering): (slave veth1-bond): Removing an active aggregator [ 15.342609][ T323] fbond (unregistering): (slave veth1-bond): Releasing backup interface [ 15.374205][ T323] fbond (unregistering): (slave veth2-bond): Removing an active aggregator [ 15.375357][ T323] fbond (unregistering): (slave veth2-bond): Releasing backup interface [ 15.396317][ T323] fbond (unregistering): Released all slaves [ 15.434980][ T323] ip (323) used greatest stack depth: 22776 bytes left