[ 11.535926][ T274] ip (274) used greatest stack depth: 22712 bytes left [ 11.661802][ T276] fab-br0: port 1(fbond) entered blocking state [ 11.662265][ T276] fab-br0: port 1(fbond) entered disabled state [ 11.662901][ T276] fbond: entered allmulticast mode [ 11.670591][ T276] fbond: entered promiscuous mode [ 11.803561][ T279] veth1-bond: entered promiscuous mode [ 11.803962][ T279] veth1-bond: entered allmulticast mode [ 11.805953][ T279] fbond: (slave veth1-bond): Enslaving as a backup interface with a down link [ 11.902967][ T280] veth2-bond: entered promiscuous mode [ 11.903371][ T280] veth2-bond: entered allmulticast mode [ 11.903876][ T280] fbond: (slave veth2-bond): Enslaving as a backup interface with a down link [ 12.088001][ T68] fbond: Warning: No 802.3ad response from the link partner for any adapters in the bond [ 12.154526][ T283] fab-br0: port 1(fbond) entered blocking state [ 12.155004][ T283] fab-br0: port 1(fbond) entered forwarding state [ 12.183866][ T68] fbond: (slave veth1-bond): link status definitely up, 10000 Mbps full duplex [ 12.184689][ T68] fbond: (slave veth2-bond): link status definitely up, 10000 Mbps full duplex [ 12.185016][ T68] fbond: active interface up! [ 14.683161][ T328] fbond: left allmulticast mode [ 14.683467][ T328] veth1-bond: left allmulticast mode [ 14.683673][ T328] veth2-bond: left allmulticast mode [ 14.683878][ T328] fbond: left promiscuous mode [ 14.684070][ T328] veth1-bond: left promiscuous mode [ 14.684486][ T328] veth2-bond: left promiscuous mode [ 14.684975][ T328] fab-br0: port 1(fbond) entered disabled state [ 15.121727][ T329] [ 15.121978][ T329] ============================= [ 15.122220][ T329] WARNING: suspicious RCU usage [ 15.122414][ T329] 6.14.0-rc6-virtme #1 Not tainted [ 15.122625][ T329] ----------------------------- [ 15.122814][ T329] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 15.123130][ T329] [ 15.123130][ T329] other info that might help us debug this: [ 15.123130][ T329] [ 15.123500][ T329] [ 15.123500][ T329] rcu_scheduler_active = 2, debug_locks = 1 [ 15.123785][ T329] 3 locks held by ip/329: [ 15.123934][ T329] #0: ffffffffade0d048 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x221/0xa30 [ 15.124290][ T329] #1: ffff8880029fad58 (&bond->mode_lock){+...}-{3:3}, at: bond_3ad_unbind_slave+0xaa/0x2070 [ 15.124679][ T329] #2: ffffffffad55b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x203/0x1850 [ 15.125008][ T329] [ 15.125008][ T329] stack backtrace: [ 15.125243][ T329] CPU: 3 UID: 0 PID: 329 Comm: ip Not tainted 6.14.0-rc6-virtme #1 [ 15.125248][ T329] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 15.125250][ T329] Call Trace: [ 15.125252][ T329] [ 15.125255][ T329] dump_stack_lvl+0xb0/0xd0 [ 15.125264][ T329] lockdep_rcu_suspicious+0x1ea/0x280 [ 15.125277][ T329] dev_hard_start_xmit+0x2fc/0x3f0 [ 15.125289][ T329] __dev_queue_xmit+0xef9/0x1850 [ 15.125305][ T329] ? __pfx___dev_queue_xmit+0x10/0x10 [ 15.125312][ T329] ? __alloc_skb+0x148/0x2e0 [ 15.125319][ T329] ? __pfx___alloc_skb+0x10/0x10 [ 15.125322][ T329] ? bond_3ad_unbind_slave+0xaa/0x2070 [ 15.125331][ T329] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 15.125341][ T329] ? __netdev_alloc_skb+0x43/0x660 [ 15.125350][ T329] ad_lacpdu_send+0x572/0x680 [ 15.125358][ T329] bond_3ad_unbind_slave+0x86e/0x2070 [ 15.125370][ T329] ? __pfx_bond_3ad_unbind_slave+0x10/0x10 [ 15.125373][ T329] ? __pfx_wait_rcu_exp_gp+0x10/0x10 [ 15.125392][ T329] __bond_release_one+0xfa0/0x1560 [ 15.125403][ T329] ? __lock_acquire+0xb9a/0x1680 [ 15.125408][ T329] ? __pfx___bond_release_one+0x10/0x10 [ 15.125420][ T329] ? find_held_lock+0x2c/0x110 [ 15.125427][ T329] ? __lock_release+0x103/0x460 [ 15.125430][ T329] ? packet_notifier+0x3a6/0x810 [ 15.125438][ T329] ? bond_netpoll_cleanup+0x158/0x290 [ 15.125446][ T329] ? __pfx_bond_netpoll_cleanup+0x10/0x10 [ 15.125460][ T329] bond_uninit+0x10c/0x340 [ 15.125465][ T329] ? __pfx_bond_uninit+0x10/0x10 [ 15.125471][ T329] ? notifier_call_chain+0xcd/0x150 [ 15.125483][ T329] unregister_netdevice_many_notify+0x39d/0x19d0 [ 15.125497][ T329] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 15.125500][ T329] ? rtnl_dellink+0x221/0xa30 [ 15.125502][ T329] ? sock_def_readable+0x11e/0x300 [ 15.125508][ T329] ? __pfx___mutex_lock+0x10/0x10 [ 15.125517][ T329] ? rtnl_is_locked+0x15/0x20 [ 15.125520][ T329] ? unregister_netdevice_queue+0x70/0x410 [ 15.125526][ T329] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 15.125530][ T329] ? __nla_validate_parse+0x48/0x3d0 [ 15.125546][ T329] rtnl_dellink+0x341/0xa30 [ 15.125553][ T329] ? __pfx_rtnl_dellink+0x10/0x10 [ 15.125619][ T329] ? find_held_lock+0x2c/0x110 [ 15.125626][ T329] ? __lock_release+0x103/0x460 [ 15.125628][ T329] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 15.125633][ T329] ? __pfx___lock_release+0x10/0x10 [ 15.125636][ T329] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 15.125649][ T329] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 15.125654][ T329] ? __pfx_rtnl_dellink+0x10/0x10 [ 15.125658][ T329] rtnetlink_rcv_msg+0x712/0xc10 [ 15.125666][ T329] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 15.125670][ T329] ? hlock_class+0x4e/0x130 [ 15.125674][ T329] ? mark_lock+0x38/0x3e0 [ 15.125684][ T329] ? __lock_acquire+0xb9a/0x1680 [ 15.125691][ T329] netlink_rcv_skb+0x130/0x360 [ 15.125697][ T329] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 15.125704][ T329] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 15.125726][ T329] ? netlink_deliver_tap+0x13e/0x340 [ 15.125732][ T329] ? netlink_deliver_tap+0xc3/0x340 [ 15.125740][ T329] netlink_unicast+0x44b/0x710 [ 15.125749][ T329] ? __pfx_netlink_unicast+0x10/0x10 [ 15.125754][ T329] ? find_held_lock+0x2c/0x110 [ 15.125765][ T329] netlink_sendmsg+0x723/0xbe0 [ 15.125774][ T329] ? __pfx_netlink_sendmsg+0x10/0x10 [ 15.125791][ T329] ____sys_sendmsg+0x7ac/0xa10 [ 15.125798][ T329] ? __pfx_____sys_sendmsg+0x10/0x10 [ 15.125801][ T329] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 15.125821][ T329] ___sys_sendmsg+0xee/0x170 [ 15.125828][ T329] ? __pfx____sys_sendmsg+0x10/0x10 [ 15.125837][ T329] ? kasan_save_stack+0x34/0x50 [ 15.125842][ T329] ? kasan_save_stack+0x24/0x50 [ 15.125844][ T329] ? kasan_record_aux_stack+0x8c/0xa0 [ 15.125848][ T329] ? __call_rcu_common.constprop.0+0xa1/0x5b0 [ 15.125851][ T329] ? __x64_sys_close+0x7c/0xd0 [ 15.125855][ T329] ? do_syscall_64+0xc1/0x1d0 [ 15.125859][ T329] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 15.125865][ T329] ? __lock_acquire+0xb9a/0x1680 [ 15.125870][ T329] ? lock_downgrade+0xb2/0x110 [ 15.125877][ T329] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 15.125884][ T329] ? find_held_lock+0x2c/0x110 [ 15.125892][ T329] ? __lock_release+0x103/0x460 [ 15.125894][ T329] ? __virt_addr_valid+0x22b/0x430 [ 15.125900][ T329] ? __pfx___lock_release+0x10/0x10 [ 15.125903][ T329] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 15.125912][ T329] __sys_sendmsg+0x109/0x1a0 [ 15.125917][ T329] ? __pfx___sys_sendmsg+0x10/0x10 [ 15.125943][ T329] do_syscall_64+0xc1/0x1d0 [ 15.125948][ T329] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 15.125952][ T329] RIP: 0033:0x7f88357109a7 [ 15.125958][ T329] 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 [ 15.125960][ T329] RSP: 002b:00007ffdb463a4f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 15.125965][ T329] RAX: ffffffffffffffda RBX: 00007ffdb463ac20 RCX: 00007f88357109a7 [ 15.125967][ T329] RDX: 0000000000000000 RSI: 00007ffdb463a560 RDI: 0000000000000005 [ 15.125969][ T329] RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000078 [ 15.125971][ T329] R10: 00007f88355ceef8 R11: 0000000000000246 R12: 0000000000000001 [ 15.125973][ T329] R13: 0000000067da6774 R14: 0000000000498600 R15: 0000000000000000 [ 15.125991][ T329] [ 15.126005][ T329] fbond (unregistering): (slave veth1-bond): Removing an active aggregator [ 15.145129][ T329] fbond (unregistering): (slave veth1-bond): Releasing backup interface [ 15.162916][ T329] fbond (unregistering): (slave veth2-bond): Removing an active aggregator [ 15.163658][ T329] fbond (unregistering): (slave veth2-bond): Releasing backup interface [ 15.182546][ T329] fbond (unregistering): Released all slaves