[ 11.731955][ T277] ip (277) used greatest stack depth: 23600 bytes left [ 34.847582][ T580] [ 34.847769][ T580] ============================================ [ 34.847981][ T580] WARNING: possible recursive locking detected [ 34.848173][ T580] 6.13.0-rc5-virtme #1 Not tainted [ 34.848341][ T580] -------------------------------------------- [ 34.848534][ T580] ip/580 is trying to acquire lock: [ 34.848691][ T580] ffffffffa6ff6a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 34.849024][ T580] [ 34.849024][ T580] but task is already holding lock: [ 34.849250][ T580] ffffffffa6ff6a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 34.849564][ T580] [ 34.849564][ T580] other info that might help us debug this: [ 34.849797][ T580] Possible unsafe locking scenario: [ 34.849797][ T580] [ 34.850026][ T580] CPU0 [ 34.850143][ T580] ---- [ 34.850260][ T580] lock((netdev_chain).rwsem); [ 34.850418][ T580] lock((netdev_chain).rwsem); [ 34.850574][ T580] [ 34.850574][ T580] *** DEADLOCK *** [ 34.850574][ T580] [ 34.850803][ T580] May be due to missing lock nesting notation [ 34.850803][ T580] [ 34.851036][ T580] 2 locks held by ip/580: [ 34.851155][ T580] #0: ffffffffa7007e88 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 34.851441][ T580] #1: ffffffffa6ff6a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 34.851761][ T580] [ 34.851761][ T580] stack backtrace: [ 34.851952][ T580] CPU: 3 UID: 0 PID: 580 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 34.852222][ T580] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 34.852417][ T580] Call Trace: [ 34.852537][ T580] [ 34.852618][ T580] dump_stack_lvl+0x82/0xd0 [ 34.852783][ T580] print_deadlock_bug+0x40a/0x650 [ 34.852948][ T580] validate_chain+0x5bf/0xae0 [ 34.853109][ T580] ? __pfx_validate_chain+0x10/0x10 [ 34.853269][ T580] ? hlock_class+0x4e/0x130 [ 34.853425][ T580] ? mark_lock+0x38/0x3e0 [ 34.853545][ T580] __lock_acquire+0xb9a/0x1680 [ 34.853702][ T580] lock_acquire.part.0+0xeb/0x330 [ 34.853859][ T580] ? blocking_notifier_call_chain+0x50/0x90 [ 34.854056][ T580] ? __lock_acquire+0xb9a/0x1680 [ 34.854214][ T580] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 34.854372][ T580] ? trace_lock_acquire+0x14c/0x1f0 [ 34.854529][ T580] ? lock_acquire+0x32/0xc0 [ 34.854688][ T580] ? blocking_notifier_call_chain+0x50/0x90 [ 34.854891][ T580] down_read+0x9f/0x340 [ 34.855014][ T580] ? blocking_notifier_call_chain+0x50/0x90 [ 34.855211][ T580] ? __pfx_down_read+0x10/0x10 [ 34.855369][ T580] ? __lock_release+0x103/0x460 [ 34.855526][ T580] blocking_notifier_call_chain+0x50/0x90 [ 34.855687][ T580] __netdev_upper_dev_unlink+0xd9/0x220 [ 34.855846][ T580] ? mark_held_locks+0x9e/0xe0 [ 34.856005][ T580] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 34.856204][ T580] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 34.856405][ T580] ? __try_to_del_timer_sync+0xe7/0x140 [ 34.856568][ T580] ? __pfx___try_to_del_timer_sync+0x10/0x10 [ 34.856764][ T580] ? mark_held_locks+0x9e/0xe0 [ 34.856924][ T580] netdev_upper_dev_unlink+0x71/0xa0 [ 34.857081][ T580] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 34.857280][ T580] ? mutex_is_locked+0x1c/0x60 [ 34.857440][ T580] ? rtnl_is_locked+0x15/0x20 [ 34.857599][ T580] ? netdev_master_upper_dev_get+0x13/0x120 [ 34.857799][ T580] vrf_device_event+0x78/0xe0 [ 34.857963][ T580] notifier_call_chain+0xcd/0x150 [ 34.858124][ T580] blocking_notifier_call_chain+0x66/0x90 [ 34.858280][ T580] unregister_netdevice_many_notify+0xa83/0x1580 [ 34.858483][ T580] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 34.858682][ T580] ? rtnl_dellink+0x228/0xa40 [ 34.858840][ T580] ? sock_def_readable+0x11e/0x300 [ 34.859000][ T580] ? __pfx___mutex_lock+0x10/0x10 [ 34.859161][ T580] ? rtnl_is_locked+0x15/0x20 [ 34.859321][ T580] ? unregister_netdevice_queue+0x70/0x410 [ 34.859516][ T580] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 34.859714][ T580] ? __nla_validate_parse+0x48/0x3d0 [ 34.859879][ T580] rtnl_dellink+0x348/0xa40 [ 34.860037][ T580] ? __pfx_rtnl_dellink+0x10/0x10 [ 34.860207][ T580] ? find_held_lock+0x2c/0x110 [ 34.860361][ T580] ? __lock_release+0x103/0x460 [ 34.860518][ T580] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 34.860676][ T580] ? __pfx___lock_release+0x10/0x10 [ 34.860834][ T580] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 34.860993][ T580] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 34.861153][ T580] ? __pfx_rtnl_dellink+0x10/0x10 [ 34.861318][ T580] rtnetlink_rcv_msg+0x712/0xc10 [ 34.861474][ T580] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 34.861631][ T580] ? hlock_class+0x4e/0x130 [ 34.861805][ T580] ? mark_lock+0x38/0x3e0 [ 34.861925][ T580] ? __lock_acquire+0xb9a/0x1680 [ 34.862093][ T580] netlink_rcv_skb+0x130/0x360 [ 34.862255][ T580] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 34.862423][ T580] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 34.862585][ T580] ? netlink_deliver_tap+0x13e/0x340 [ 34.862747][ T580] ? netlink_deliver_tap+0xc3/0x340 [ 34.862904][ T580] netlink_unicast+0x44b/0x710 [ 34.863066][ T580] ? __pfx_netlink_unicast+0x10/0x10 [ 34.863225][ T580] ? find_held_lock+0x2c/0x110 [ 34.863382][ T580] netlink_sendmsg+0x723/0xbe0 [ 34.863540][ T580] ? __pfx_netlink_sendmsg+0x10/0x10 [ 34.863703][ T580] ____sys_sendmsg+0x7ac/0xa10 [ 34.863863][ T580] ? __pfx_____sys_sendmsg+0x10/0x10 [ 34.864030][ T580] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 34.864227][ T580] ___sys_sendmsg+0xee/0x170 [ 34.864386][ T580] ? __pfx____sys_sendmsg+0x10/0x10 [ 34.864542][ T580] ? kasan_save_stack+0x34/0x50 [ 34.864701][ T580] ? kasan_save_stack+0x24/0x50 [ 34.864856][ T580] ? __kasan_record_aux_stack+0x8e/0xa0 [ 34.865013][ T580] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 34.865211][ T580] ? __x64_sys_close+0x7c/0xd0 [ 34.865371][ T580] ? do_syscall_64+0xc1/0x1d0 [ 34.865530][ T580] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 34.865726][ T580] ? __lock_acquire+0xb9a/0x1680 [ 34.865884][ T580] ? find_held_lock+0x2c/0x110 [ 34.866039][ T580] ? __lock_release+0x103/0x460 [ 34.866197][ T580] ? __virt_addr_valid+0x22b/0x430 [ 34.866358][ T580] ? __pfx___lock_release+0x10/0x10 [ 34.866514][ T580] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 34.866675][ T580] __sys_sendmsg+0x109/0x1a0 [ 34.866841][ T580] ? __pfx___sys_sendmsg+0x10/0x10 [ 34.866999][ T580] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 34.867202][ T580] do_syscall_64+0xc1/0x1d0 [ 34.867360][ T580] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 34.867567][ T580] RIP: 0033:0x7fbbe194b9a7 [ 34.867728][ T580] 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 [ 34.868282][ T580] RSP: 002b:00007ffca5af6358 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 34.868516][ T580] RAX: ffffffffffffffda RBX: 00007ffca5af6a90 RCX: 00007fbbe194b9a7 [ 34.868753][ T580] RDX: 0000000000000000 RSI: 00007ffca5af63c0 RDI: 0000000000000005 [ 34.868993][ T580] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 34.869228][ T580] R10: 00007fbbe18094a8 R11: 0000000000000246 R12: 0000000000000002 [ 34.869464][ T580] R13: 00000000677938a7 R14: 0000000000498600 R15: 0000000000000000 [ 34.869700][ T580] [ 52.521839][ T872] IPv6: Can't replace route, no match found [ 54.742868][ T942] IPv6: Can't replace route, no match found [ 96.679921][ T1857] Mirror/redirect action on [ 183.550661][ T2484] veth2: entered promiscuous mode [ 183.580428][ T2484] veth2: left promiscuous mode