[ 10.800297][ T251] bond1: (slave dummy1): making interface the new active one [ 10.801586][ T251] bond1: (slave dummy1): Enslaving as an active interface with an up link [ 10.943581][ T254] bond1: (slave dummy2): Enslaving as a backup interface with an up link [ 11.022611][ T255] dummy1: entered promiscuous mode [ 11.519502][ T275] dummy1: left promiscuous mode [ 11.915592][ T276] [ 11.915822][ T276] ============================================ [ 11.916049][ T276] WARNING: possible recursive locking detected [ 11.916247][ T276] 6.13.0-rc5-virtme #1 Not tainted [ 11.916438][ T276] -------------------------------------------- [ 11.916649][ T276] ip/276 is trying to acquire lock: [ 11.916818][ T276] ffffffffb4bf0a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 11.917253][ T276] [ 11.917253][ T276] but task is already holding lock: [ 11.917513][ T276] ffffffffb4bf0a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 11.917882][ T276] [ 11.917882][ T276] other info that might help us debug this: [ 11.918186][ T276] Possible unsafe locking scenario: [ 11.918186][ T276] [ 11.918423][ T276] CPU0 [ 11.918579][ T276] ---- [ 11.918719][ T276] lock((netdev_chain).rwsem); [ 11.918884][ T276] lock((netdev_chain).rwsem); [ 11.919060][ T276] [ 11.919060][ T276] *** DEADLOCK *** [ 11.919060][ T276] [ 11.919331][ T276] May be due to missing lock nesting notation [ 11.919331][ T276] [ 11.919564][ T276] 2 locks held by ip/276: [ 11.919704][ T276] #0: ffffffffb4c01dc8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 11.920043][ T276] #1: ffffffffb4bf0a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 11.920416][ T276] [ 11.920416][ T276] stack backtrace: [ 11.920654][ T276] CPU: 3 UID: 0 PID: 276 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 11.920950][ T276] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 11.921181][ T276] Call Trace: [ 11.921306][ T276] [ 11.921401][ T276] dump_stack_lvl+0x82/0xd0 [ 11.921608][ T276] print_deadlock_bug+0x40a/0x650 [ 11.921781][ T276] validate_chain+0x5bf/0xae0 [ 11.921993][ T276] ? __pfx_validate_chain+0x10/0x10 [ 11.922158][ T276] ? hlock_class+0x4e/0x130 [ 11.922367][ T276] ? mark_lock+0x38/0x3e0 [ 11.922493][ T276] __lock_acquire+0xb9a/0x1680 [ 11.922680][ T276] lock_acquire.part.0+0xeb/0x330 [ 11.922879][ T276] ? blocking_notifier_call_chain+0x50/0x90 [ 11.923084][ T276] ? __kasan_slab_free+0x38/0x50 [ 11.923300][ T276] ? kmem_cache_free+0xf8/0x330 [ 11.923464][ T276] ? remove_proc_entry+0x18d/0x3e0 [ 11.923646][ T276] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 11.923839][ T276] ? trace_lock_acquire+0x14c/0x1f0 [ 11.924013][ T276] ? lock_acquire+0x32/0xc0 [ 11.924177][ T276] ? blocking_notifier_call_chain+0x50/0x90 [ 11.924426][ T276] down_read+0x9f/0x340 [ 11.924592][ T276] ? blocking_notifier_call_chain+0x50/0x90 [ 11.924830][ T276] ? __pfx_down_read+0x10/0x10 [ 11.925031][ T276] ? __debug_check_no_obj_freed+0x253/0x520 [ 11.925268][ T276] blocking_notifier_call_chain+0x50/0x90 [ 11.925478][ T276] __netdev_upper_dev_unlink+0xd9/0x220 [ 11.925659][ T276] ? mark_held_locks+0x9e/0xe0 [ 11.925855][ T276] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 11.926071][ T276] ? unregister_netdevice_queue+0x70/0x410 [ 11.926271][ T276] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 11.926472][ T276] ? remove_proc_entry+0x18d/0x3e0 [ 11.926632][ T276] netdev_upper_dev_unlink+0x71/0xa0 [ 11.926789][ T276] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 11.926999][ T276] macvlan_device_event+0x51b/0x7e0 [ 11.927168][ T276] ? __pfx_macvlan_device_event+0x10/0x10 [ 11.927329][ T276] ? bond_remove_proc_entry+0x10f/0x1a0 [ 11.927492][ T276] notifier_call_chain+0xcd/0x150 [ 11.927654][ T276] blocking_notifier_call_chain+0x66/0x90 [ 11.927812][ T276] unregister_netdevice_many_notify+0xa7b/0x1580 [ 11.928107][ T276] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 11.928359][ T276] ? rtnl_dellink+0x228/0xa40 [ 11.928562][ T276] ? sock_def_readable+0x11e/0x300 [ 11.928762][ T276] ? __pfx___mutex_lock+0x10/0x10 [ 11.928982][ T276] ? rtnl_is_locked+0x15/0x20 [ 11.929149][ T276] ? unregister_netdevice_queue+0x70/0x410 [ 11.929348][ T276] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 11.929548][ T276] ? __nla_validate_parse+0x48/0x3d0 [ 11.929711][ T276] rtnl_dellink+0x348/0xa40 [ 11.929881][ T276] ? __pfx_rtnl_dellink+0x10/0x10 [ 11.930055][ T276] ? find_held_lock+0x2c/0x110 [ 11.930218][ T276] ? __lock_release+0x103/0x460 [ 11.930375][ T276] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 11.930536][ T276] ? __pfx___lock_release+0x10/0x10 [ 11.930694][ T276] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 11.930856][ T276] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 11.931037][ T276] ? __pfx_rtnl_dellink+0x10/0x10 [ 11.931196][ T276] rtnetlink_rcv_msg+0x712/0xc10 [ 11.931359][ T276] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 11.931519][ T276] ? hlock_class+0x4e/0x130 [ 11.931677][ T276] ? mark_lock+0x38/0x3e0 [ 11.931800][ T276] ? __lock_acquire+0xb9a/0x1680 [ 11.931964][ T276] netlink_rcv_skb+0x130/0x360 [ 11.932126][ T276] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 11.932287][ T276] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 11.932454][ T276] ? netlink_deliver_tap+0x13e/0x340 [ 11.932615][ T276] ? netlink_deliver_tap+0xc3/0x340 [ 11.932776][ T276] netlink_unicast+0x44b/0x710 [ 11.932946][ T276] ? __pfx_netlink_unicast+0x10/0x10 [ 11.933106][ T276] ? find_held_lock+0x2c/0x110 [ 11.933267][ T276] netlink_sendmsg+0x723/0xbe0 [ 11.933428][ T276] ? __pfx_netlink_sendmsg+0x10/0x10 [ 11.933591][ T276] ____sys_sendmsg+0x7ac/0xa10 [ 11.933751][ T276] ? __pfx_____sys_sendmsg+0x10/0x10 [ 11.933921][ T276] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 11.934122][ T276] ___sys_sendmsg+0xee/0x170 [ 11.934281][ T276] ? __pfx____sys_sendmsg+0x10/0x10 [ 11.934445][ T276] ? kasan_save_stack+0x34/0x50 [ 11.934610][ T276] ? kasan_save_stack+0x24/0x50 [ 11.934777][ T276] ? __kasan_record_aux_stack+0x8e/0xa0 [ 11.934950][ T276] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 11.935148][ T276] ? __x64_sys_close+0x7c/0xd0 [ 11.935306][ T276] ? do_syscall_64+0xc1/0x1d0 [ 11.935464][ T276] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 11.935676][ T276] ? __lock_acquire+0xb9a/0x1680 [ 11.935837][ T276] ? find_held_lock+0x2c/0x110 [ 11.936008][ T276] ? __lock_release+0x103/0x460 [ 11.936165][ T276] ? __virt_addr_valid+0x22b/0x430 [ 11.936327][ T276] ? __pfx___lock_release+0x10/0x10 [ 11.936487][ T276] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 11.936648][ T276] __sys_sendmsg+0x109/0x1a0 [ 11.936808][ T276] ? __pfx___sys_sendmsg+0x10/0x10 [ 11.936975][ T276] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 11.937186][ T276] do_syscall_64+0xc1/0x1d0 [ 11.937346][ T276] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 11.937544][ T276] RIP: 0033:0x7fccba32f9a7 [ 11.937711][ T276] 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 [ 11.938409][ T276] RSP: 002b:00007ffff82654f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 11.938655][ T276] RAX: ffffffffffffffda RBX: 00007ffff8265c20 RCX: 00007fccba32f9a7 [ 11.938907][ T276] RDX: 0000000000000000 RSI: 00007ffff8265560 RDI: 0000000000000005 [ 11.939149][ T276] RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000078 [ 11.939392][ T276] R10: 00007fccba1edef8 R11: 0000000000000246 R12: 0000000000000001 [ 11.939634][ T276] R13: 000000006778ff1b R14: 0000000000498600 R15: 0000000000000000 [ 11.939886][ T276] [ 11.961692][ T276] bond1 (unregistering): (slave dummy1): Releasing backup interface [ 11.981232][ T276] bond1 (unregistering): (slave dummy2): Releasing backup interface [ 11.993743][ T276] bond1 (unregistering): Released all slaves [ 13.124927][ T308] bond1: (slave dummy1): Enslaving as a backup interface with an up link [ 13.139857][ T253] bond1: Warning: No 802.3ad response from the link partner for any adapters in the bond [ 13.190436][ T310] bond1: (slave dummy2): Enslaving as a backup interface with an up link [ 13.247063][ T253] bond1: Warning: No 802.3ad response from the link partner for any adapters in the bond [ 13.297093][ T311] dummy1: entered promiscuous mode [ 13.297353][ T311] dummy2: entered promiscuous mode [ 13.680555][ T324] dummy1: left promiscuous mode [ 13.680852][ T324] dummy2: left promiscuous mode [ 13.928372][ T325] bond1 (unregistering): (slave dummy1): Removing an active aggregator [ 13.928663][ T325] bond1: Warning: No 802.3ad response from the link partner for any adapters in the bond [ 13.929192][ T325] bond1 (unregistering): (slave dummy1): Releasing backup interface [ 13.941040][ T325] bond1 (unregistering): (slave dummy2): Removing an active aggregator [ 13.941591][ T325] bond1 (unregistering): (slave dummy2): Releasing backup interface [ 13.957391][ T325] bond1 (unregistering): Released all slaves [ 14.950434][ T353] bond1: (slave dummy1): Enslaving as a backup interface with an up link [ 15.031659][ T253] bond1: Warning: No 802.3ad response from the link partner for any adapters in the bond [ 15.139845][ T11] bond1: Warning: No 802.3ad response from the link partner for any adapters in the bond [ 15.495366][ T367] bond1: (slave dummy1): Removing an active aggregator [ 15.495851][ T367] bond1: (slave dummy1): Releasing backup interface [ 15.928530][ T371] bond1 (unregistering): Released all slaves [ 16.450262][ T388] bond1: (slave dummy1): Enslaving as a backup interface with an up link [ 16.458840][ T11] bond1: Warning: No 802.3ad response from the link partner for any adapters in the bond [ 16.563696][ T253] bond1: Warning: No 802.3ad response from the link partner for any adapters in the bond [ 16.940562][ T401] bond1: (slave dummy1): Removing an active aggregator [ 16.940966][ T401] bond1: (slave dummy1): Releasing backup interface [ 17.391436][ T405] bond1 (unregistering): Released all slaves