[ 1237.399117][ T4037] GACT probability NOT on
[ 1256.357994][ T4447] 
[ 1256.358171][ T4447] ============================================
[ 1256.358378][ T4447] WARNING: possible recursive locking detected
[ 1256.358582][ T4447] 6.13.0-rc5-virtme #1 Not tainted
[ 1256.358751][ T4447] --------------------------------------------
[ 1256.358951][ T4447] ip/4447 is trying to acquire lock:
[ 1256.359114][ T4447] ffffffffb47d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90
[ 1256.359479][ T4447] 
[ 1256.359479][ T4447] but task is already holding lock:
[ 1256.359731][ T4447] ffffffffb47d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90
[ 1256.360073][ T4447] 
[ 1256.360073][ T4447] other info that might help us debug this:
[ 1256.360310][ T4447]  Possible unsafe locking scenario:
[ 1256.360310][ T4447] 
[ 1256.360534][ T4447]        CPU0
[ 1256.360643][ T4447]        ----
[ 1256.360760][ T4447]   lock((netdev_chain).rwsem);
[ 1256.360910][ T4447]   lock((netdev_chain).rwsem);
[ 1256.361060][ T4447] 
[ 1256.361060][ T4447]  *** DEADLOCK ***
[ 1256.361060][ T4447] 
[ 1256.361280][ T4447]  May be due to missing lock nesting notation
[ 1256.361280][ T4447] 
[ 1256.361503][ T4447] 2 locks held by ip/4447:
[ 1256.361662][ T4447]  #0: ffffffffb47e7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40
[ 1256.361934][ T4447]  #1: ffffffffb47d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90
[ 1256.362234][ T4447] 
[ 1256.362234][ T4447] stack backtrace:
[ 1256.362417][ T4447] CPU: 3 UID: 0 PID: 4447 Comm: ip Not tainted 6.13.0-rc5-virtme #1
[ 1256.362643][ T4447] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1256.362835][ T4447] Call Trace:
[ 1256.362947][ T4447]  <TASK>
[ 1256.363027][ T4447]  dump_stack_lvl+0x82/0xd0
[ 1256.363192][ T4447]  print_deadlock_bug+0x40a/0x650
[ 1256.363347][ T4447]  validate_chain+0x5bf/0xae0
[ 1256.363497][ T4447]  ? __pfx_validate_chain+0x10/0x10
[ 1256.363651][ T4447]  ? hlock_class+0x4e/0x130
[ 1256.363811][ T4447]  ? mark_lock+0x38/0x3e0
[ 1256.363930][ T4447]  __lock_acquire+0xb9a/0x1680
[ 1256.364086][ T4447]  lock_acquire.part.0+0xeb/0x330
[ 1256.364237][ T4447]  ? blocking_notifier_call_chain+0x50/0x90
[ 1256.364501][ T4447]  ? netconsole_process_cleanups_core+0x2e/0x3d0
[ 1256.364714][ T4447]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 1256.364890][ T4447]  ? trace_lock_acquire+0x14c/0x1f0
[ 1256.365038][ T4447]  ? lock_acquire+0x32/0xc0
[ 1256.365188][ T4447]  ? blocking_notifier_call_chain+0x50/0x90
[ 1256.365374][ T4447]  down_read+0x9f/0x340
[ 1256.365492][ T4447]  ? blocking_notifier_call_chain+0x50/0x90
[ 1256.365685][ T4447]  ? __pfx_down_read+0x10/0x10
[ 1256.365833][ T4447]  ? __lock_release+0x103/0x460
[ 1256.365980][ T4447]  ? netconsole_netdev_event+0x2c1/0x620
[ 1256.366133][ T4447]  ? __pfx___lock_release+0x10/0x10
[ 1256.366288][ T4447]  blocking_notifier_call_chain+0x50/0x90
[ 1256.366442][ T4447]  __netdev_upper_dev_unlink+0xd9/0x220
[ 1256.366592][ T4447]  ? __pfx___netdev_upper_dev_unlink+0x10/0x10
[ 1256.366790][ T4447]  ? __mutex_unlock_slowpath+0x14a/0x3d0
[ 1256.366939][ T4447]  ? __pfx___mutex_unlock_slowpath+0x10/0x10
[ 1256.367129][ T4447]  ? rtnl_is_locked+0x15/0x20
[ 1256.367282][ T4447]  netdev_upper_dev_unlink+0x71/0xa0
[ 1256.367429][ T4447]  ? __pfx_netdev_upper_dev_unlink+0x10/0x10
[ 1256.367616][ T4447]  ? netconsole_netdev_event+0x2c1/0x620
[ 1256.367776][ T4447]  ? mutex_is_locked+0x1c/0x60
[ 1256.367929][ T4447]  ? rtnl_is_locked+0x15/0x20
[ 1256.368078][ T4447]  ? netdev_master_upper_dev_get+0x13/0x120
[ 1256.368266][ T4447]  vrf_device_event+0x78/0xe0 [vrf]
[ 1256.368418][ T4447]  notifier_call_chain+0xcd/0x150
[ 1256.368577][ T4447]  blocking_notifier_call_chain+0x66/0x90
[ 1256.368769][ T4447]  unregister_netdevice_many_notify+0xa7b/0x1580
[ 1256.368982][ T4447]  ? __lock_release+0x103/0x460
[ 1256.369148][ T4447]  ? __pfx___lock_release+0x10/0x10
[ 1256.369314][ T4447]  ? __pfx_unregister_netdevice_many_notify+0x10/0x10
[ 1256.369521][ T4447]  ? hlock_class+0x4e/0x130
[ 1256.369686][ T4447]  ? mark_held_locks+0x9e/0xe0
[ 1256.369853][ T4447]  ? __pfx_vlan_info_rcu_free+0x10/0x10
[ 1256.370022][ T4447]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1256.370238][ T4447]  rtnl_dellink+0x348/0xa40
[ 1256.370403][ T4447]  ? __pfx_rtnl_dellink+0x10/0x10
[ 1256.370582][ T4447]  ? find_held_lock+0x2c/0x110
[ 1256.370750][ T4447]  ? __lock_release+0x103/0x460
[ 1256.370916][ T4447]  ? rtnetlink_rcv_msg+0x6ef/0xc10
[ 1256.371079][ T4447]  ? __pfx___lock_release+0x10/0x10
[ 1256.371241][ T4447]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 1256.371416][ T4447]  ? rtnetlink_rcv_msg+0x6ef/0xc10
[ 1256.371583][ T4447]  ? __pfx_rtnl_dellink+0x10/0x10
[ 1256.371751][ T4447]  rtnetlink_rcv_msg+0x712/0xc10
[ 1256.371916][ T4447]  ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 1256.372082][ T4447]  ? hlock_class+0x4e/0x130
[ 1256.372248][ T4447]  ? mark_lock+0x38/0x3e0
[ 1256.372373][ T4447]  ? __lock_acquire+0xb9a/0x1680
[ 1256.372539][ T4447]  netlink_rcv_skb+0x130/0x360
[ 1256.372714][ T4447]  ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 1256.372881][ T4447]  ? __pfx_netlink_rcv_skb+0x10/0x10
[ 1256.373052][ T4447]  ? netlink_deliver_tap+0x13e/0x340
[ 1256.373221][ T4447]  ? netlink_deliver_tap+0xc3/0x340
[ 1256.373393][ T4447]  netlink_unicast+0x44b/0x710
[ 1256.373558][ T4447]  ? __pfx_netlink_unicast+0x10/0x10
[ 1256.373732][ T4447]  ? find_held_lock+0x2c/0x110
[ 1256.373904][ T4447]  netlink_sendmsg+0x723/0xbe0
[ 1256.374071][ T4447]  ? __pfx_netlink_sendmsg+0x10/0x10
[ 1256.374241][ T4447]  ____sys_sendmsg+0x7ac/0xa10
[ 1256.374405][ T4447]  ? __pfx_____sys_sendmsg+0x10/0x10
[ 1256.374582][ T4447]  ? __pfx_copy_msghdr_from_user+0x10/0x10
[ 1256.374794][ T4447]  ___sys_sendmsg+0xee/0x170
[ 1256.374962][ T4447]  ? __pfx____sys_sendmsg+0x10/0x10
[ 1256.375139][ T4447]  ? kasan_save_stack+0x34/0x50
[ 1256.375309][ T4447]  ? kasan_save_stack+0x24/0x50
[ 1256.375474][ T4447]  ? __kasan_record_aux_stack+0x8e/0xa0
[ 1256.375645][ T4447]  ? __call_rcu_common.constprop.0+0xa1/0x4b0
[ 1256.375855][ T4447]  ? __x64_sys_close+0x7c/0xd0
[ 1256.376025][ T4447]  ? do_syscall_64+0xc1/0x1d0
[ 1256.376192][ T4447]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1256.376412][ T4447]  ? __lock_acquire+0xb9a/0x1680
[ 1256.376579][ T4447]  ? find_held_lock+0x2c/0x110
[ 1256.376748][ T4447]  ? __lock_release+0x103/0x460
[ 1256.376915][ T4447]  ? __virt_addr_valid+0x22b/0x430
[ 1256.377084][ T4447]  ? __pfx___lock_release+0x10/0x10
[ 1256.377247][ T4447]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 1256.377418][ T4447]  __sys_sendmsg+0x109/0x1a0
[ 1256.377592][ T4447]  ? __pfx___sys_sendmsg+0x10/0x10
[ 1256.377758][ T4447]  ? __pfx_slab_free_after_rcu_debug+0x10/0x10
[ 1256.377968][ T4447]  do_syscall_64+0xc1/0x1d0
[ 1256.378132][ T4447]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1256.378338][ T4447] RIP: 0033:0x7fc522d2e9a7
[ 1256.378513][ T4447] 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
[ 1256.379103][ T4447] RSP: 002b:00007ffd35ba5518 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 1256.379352][ T4447] RAX: ffffffffffffffda RBX: 00007ffd35ba5c40 RCX: 00007fc522d2e9a7
[ 1256.379603][ T4447] RDX: 0000000000000000 RSI: 00007ffd35ba5580 RDI: 0000000000000005
[ 1256.379857][ T4447] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[ 1256.380103][ T4447] R10: 00007fc522becef8 R11: 0000000000000246 R12: 0000000000000002
[ 1256.380350][ T4447] R13: 0000000067792ab6 R14: 0000000000498600 R15: 0000000000000000
[ 1256.380601][ T4447]  </TASK>