[ 10.687944][ T251] bond1: (slave dummy1): making interface the new active one [ 10.688880][ T251] bond1: (slave dummy1): Enslaving as an active interface with an up link [ 10.793092][ T255] bond1: (slave dummy2): Enslaving as a backup interface with an up link [ 10.892964][ T256] dummy1: entered promiscuous mode [ 11.407684][ T276] dummy1: left promiscuous mode [ 11.777983][ T277] [ 11.778140][ T277] ============================================ [ 11.778334][ T277] WARNING: possible recursive locking detected [ 11.778532][ T277] 6.13.0-rc5-virtme #1 Not tainted [ 11.778694][ T277] -------------------------------------------- [ 11.778902][ T277] ip/277 is trying to acquire lock: [ 11.779051][ T277] ffffffffa19f0a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 11.779361][ T277] [ 11.779361][ T277] but task is already holding lock: [ 11.779580][ T277] ffffffffa19f0a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 11.779884][ T277] [ 11.779884][ T277] other info that might help us debug this: [ 11.780101][ T277] Possible unsafe locking scenario: [ 11.780101][ T277] [ 11.780329][ T277] CPU0 [ 11.780445][ T277] ---- [ 11.780555][ T277] lock((netdev_chain).rwsem); [ 11.780708][ T277] lock((netdev_chain).rwsem); [ 11.780860][ T277] [ 11.780860][ T277] *** DEADLOCK *** [ 11.780860][ T277] [ 11.781097][ T277] May be due to missing lock nesting notation [ 11.781097][ T277] [ 11.781334][ T277] 2 locks held by ip/277: [ 11.781468][ T277] #0: ffffffffa1a01dc8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 11.781771][ T277] #1: ffffffffa19f0a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 11.782102][ T277] [ 11.782102][ T277] stack backtrace: [ 11.782301][ T277] CPU: 2 UID: 0 PID: 277 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 11.782544][ T277] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 11.782755][ T277] Call Trace: [ 11.782902][ T277] [ 11.783022][ T277] dump_stack_lvl+0x82/0xd0 [ 11.783200][ T277] print_deadlock_bug+0x40a/0x650 [ 11.783363][ T277] validate_chain+0x5bf/0xae0 [ 11.783514][ T277] ? __pfx_validate_chain+0x10/0x10 [ 11.783691][ T277] ? hlock_class+0x4e/0x130 [ 11.783850][ T277] ? mark_lock+0x38/0x3e0 [ 11.783967][ T277] __lock_acquire+0xb9a/0x1680 [ 11.784126][ T277] lock_acquire.part.0+0xeb/0x330 [ 11.784274][ T277] ? blocking_notifier_call_chain+0x50/0x90 [ 11.784483][ T277] ? __kasan_slab_free+0x38/0x50 [ 11.784638][ T277] ? kmem_cache_free+0xf8/0x330 [ 11.784795][ T277] ? remove_proc_entry+0x18d/0x3e0 [ 11.784949][ T277] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 11.785097][ T277] ? trace_lock_acquire+0x14c/0x1f0 [ 11.785244][ T277] ? lock_acquire+0x32/0xc0 [ 11.785390][ T277] ? blocking_notifier_call_chain+0x50/0x90 [ 11.785585][ T277] down_read+0x9f/0x340 [ 11.785709][ T277] ? blocking_notifier_call_chain+0x50/0x90 [ 11.785898][ T277] ? __pfx_down_read+0x10/0x10 [ 11.786055][ T277] ? __debug_check_no_obj_freed+0x253/0x520 [ 11.786253][ T277] blocking_notifier_call_chain+0x50/0x90 [ 11.786410][ T277] __netdev_upper_dev_unlink+0xd9/0x220 [ 11.786571][ T277] ? mark_held_locks+0x9e/0xe0 [ 11.786728][ T277] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 11.786932][ T277] ? unregister_netdevice_queue+0x70/0x410 [ 11.787116][ T277] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 11.787298][ T277] ? remove_proc_entry+0x18d/0x3e0 [ 11.787450][ T277] netdev_upper_dev_unlink+0x71/0xa0 [ 11.787597][ T277] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 11.787785][ T277] macvlan_device_event+0x51b/0x7e0 [ 11.787944][ T277] ? __pfx_macvlan_device_event+0x10/0x10 [ 11.788122][ T277] ? bond_remove_proc_entry+0x10f/0x1a0 [ 11.788296][ T277] notifier_call_chain+0xcd/0x150 [ 11.788466][ T277] blocking_notifier_call_chain+0x66/0x90 [ 11.788633][ T277] unregister_netdevice_many_notify+0xa7b/0x1580 [ 11.788848][ T277] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 11.789058][ T277] ? rtnl_dellink+0x228/0xa40 [ 11.789219][ T277] ? sock_def_readable+0x11e/0x300 [ 11.789382][ T277] ? __pfx___mutex_lock+0x10/0x10 [ 11.789574][ T277] ? rtnl_is_locked+0x15/0x20 [ 11.789773][ T277] ? unregister_netdevice_queue+0x70/0x410 [ 11.790002][ T277] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 11.790188][ T277] ? __nla_validate_parse+0x48/0x3d0 [ 11.790359][ T277] rtnl_dellink+0x348/0xa40 [ 11.790535][ T277] ? __pfx_rtnl_dellink+0x10/0x10 [ 11.790709][ T277] ? find_held_lock+0x2c/0x110 [ 11.790890][ T277] ? __lock_release+0x103/0x460 [ 11.791061][ T277] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 11.791211][ T277] ? __pfx___lock_release+0x10/0x10 [ 11.791369][ T277] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 11.791519][ T277] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 11.791672][ T277] ? __pfx_rtnl_dellink+0x10/0x10 [ 11.791859][ T277] rtnetlink_rcv_msg+0x712/0xc10 [ 11.792005][ T277] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 11.792152][ T277] ? hlock_class+0x4e/0x130 [ 11.792301][ T277] ? mark_lock+0x38/0x3e0 [ 11.792412][ T277] ? __lock_acquire+0xb9a/0x1680 [ 11.792556][ T277] netlink_rcv_skb+0x130/0x360 [ 11.792703][ T277] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 11.792850][ T277] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 11.792996][ T277] ? netlink_deliver_tap+0x13e/0x340 [ 11.793140][ T277] ? netlink_deliver_tap+0xc3/0x340 [ 11.793303][ T277] netlink_unicast+0x44b/0x710 [ 11.793448][ T277] ? __pfx_netlink_unicast+0x10/0x10 [ 11.793593][ T277] ? find_held_lock+0x2c/0x110 [ 11.793744][ T277] netlink_sendmsg+0x723/0xbe0 [ 11.793906][ T277] ? __pfx_netlink_sendmsg+0x10/0x10 [ 11.794061][ T277] ____sys_sendmsg+0x7ac/0xa10 [ 11.794210][ T277] ? __pfx_____sys_sendmsg+0x10/0x10 [ 11.794358][ T277] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 11.794543][ T277] ___sys_sendmsg+0xee/0x170 [ 11.794695][ T277] ? __pfx____sys_sendmsg+0x10/0x10 [ 11.794863][ T277] ? kasan_save_stack+0x34/0x50 [ 11.795009][ T277] ? kasan_save_stack+0x24/0x50 [ 11.795156][ T277] ? __kasan_record_aux_stack+0x8e/0xa0 [ 11.795300][ T277] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 11.795480][ T277] ? __x64_sys_close+0x7c/0xd0 [ 11.795630][ T277] ? do_syscall_64+0xc1/0x1d0 [ 11.795788][ T277] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 11.795978][ T277] ? __lock_acquire+0xb9a/0x1680 [ 11.796126][ T277] ? find_held_lock+0x2c/0x110 [ 11.796270][ T277] ? __lock_release+0x103/0x460 [ 11.796413][ T277] ? __virt_addr_valid+0x22b/0x430 [ 11.796559][ T277] ? __pfx___lock_release+0x10/0x10 [ 11.796703][ T277] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 11.796851][ T277] __sys_sendmsg+0x109/0x1a0 [ 11.797000][ T277] ? __pfx___sys_sendmsg+0x10/0x10 [ 11.797142][ T277] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 11.797329][ T277] do_syscall_64+0xc1/0x1d0 [ 11.797475][ T277] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 11.797659][ T277] RIP: 0033:0x7f3358b539a7 [ 11.797817][ T277] 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 [ 11.798572][ T277] RSP: 002b:00007ffcd918ba38 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 11.798935][ T277] RAX: ffffffffffffffda RBX: 00007ffcd918c160 RCX: 00007f3358b539a7 [ 11.799293][ T277] RDX: 0000000000000000 RSI: 00007ffcd918baa0 RDI: 0000000000000005 [ 11.799653][ T277] RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000078 [ 11.800002][ T277] R10: 00007f3358a11ef8 R11: 0000000000000246 R12: 0000000000000001 [ 11.800358][ T277] R13: 00000000677953e2 R14: 0000000000498600 R15: 0000000000000000 [ 11.800717][ T277] [ 11.825774][ T277] bond1 (unregistering): (slave dummy1): Releasing backup interface [ 11.839029][ T277] bond1 (unregistering): (slave dummy2): Releasing backup interface [ 11.853134][ T277] bond1 (unregistering): Released all slaves [ 12.917772][ T308] bond1: (slave dummy1): Enslaving as a backup interface with an up link [ 12.944263][ T253] bond1: Warning: No 802.3ad response from the link partner for any adapters in the bond [ 13.030658][ T310] bond1: (slave dummy2): Enslaving as a backup interface with an up link [ 13.048243][ T253] bond1: Warning: No 802.3ad response from the link partner for any adapters in the bond [ 13.099895][ T311] dummy1: entered promiscuous mode [ 13.100162][ T311] dummy2: entered promiscuous mode [ 13.454220][ T324] dummy1: left promiscuous mode [ 13.454452][ T324] dummy2: left promiscuous mode [ 13.708494][ T325] bond1 (unregistering): (slave dummy1): Removing an active aggregator [ 13.708801][ T325] bond1: Warning: No 802.3ad response from the link partner for any adapters in the bond [ 13.709349][ T325] bond1 (unregistering): (slave dummy1): Releasing backup interface [ 13.732561][ T325] bond1 (unregistering): (slave dummy2): Removing an active aggregator [ 13.733103][ T325] bond1 (unregistering): (slave dummy2): Releasing backup interface [ 13.741348][ T325] bond1 (unregistering): Released all slaves [ 14.715481][ T353] bond1: (slave dummy1): Enslaving as a backup interface with an up link [ 14.807957][ T253] bond1: Warning: No 802.3ad response from the link partner for any adapters in the bond [ 14.912310][ T253] bond1: Warning: No 802.3ad response from the link partner for any adapters in the bond [ 15.204871][ T367] bond1: (slave dummy1): Removing an active aggregator [ 15.205273][ T367] bond1: (slave dummy1): Releasing backup interface [ 15.640827][ T371] bond1 (unregistering): Released all slaves [ 16.119016][ T389] bond1: (slave dummy1): Enslaving as a backup interface with an up link [ 16.144717][ T253] bond1: Warning: No 802.3ad response from the link partner for any adapters in the bond [ 16.248260][ T253] bond1: Warning: No 802.3ad response from the link partner for any adapters in the bond [ 16.528757][ T402] bond1: (slave dummy1): Removing an active aggregator [ 16.529089][ T402] bond1: (slave dummy1): Releasing backup interface [ 16.947734][ T406] bond1 (unregistering): Released all slaves