[   10.629065][  T251] ip (251) used greatest stack depth: 24448 bytes left
[   12.427867][  T286] 8021q: 802.1Q VLAN Support v1.8
[   23.901122][  T376] 
[   23.901285][  T376] ============================================
[   23.901482][  T376] WARNING: possible recursive locking detected
[   23.901667][  T376] 6.13.0-rc5-virtme #1 Not tainted
[   23.901823][  T376] --------------------------------------------
[   23.902013][  T376] ip/376 is trying to acquire lock:
[   23.902161][  T376] ffffffffa61d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90
[   23.902473][  T376] 
[   23.902473][  T376] but task is already holding lock:
[   23.902697][  T376] ffffffffa61d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90
[   23.903012][  T376] 
[   23.903012][  T376] other info that might help us debug this:
[   23.903231][  T376]  Possible unsafe locking scenario:
[   23.903231][  T376] 
[   23.903452][  T376]        CPU0
[   23.903562][  T376]        ----
[   23.903674][  T376]   lock((netdev_chain).rwsem);
[   23.903826][  T376]   lock((netdev_chain).rwsem);
[   23.903976][  T376] 
[   23.903976][  T376]  *** DEADLOCK ***
[   23.903976][  T376] 
[   23.904192][  T376]  May be due to missing lock nesting notation
[   23.904192][  T376] 
[   23.904408][  T376] 2 locks held by ip/376:
[   23.904522][  T376]  #0: ffffffffa61e7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40
[   23.904803][  T376]  #1: ffffffffa61d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90
[   23.905102][  T376] 
[   23.905102][  T376] stack backtrace:
[   23.905286][  T376] CPU: 3 UID: 0 PID: 376 Comm: ip Not tainted 6.13.0-rc5-virtme #1
[   23.905510][  T376] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   23.905700][  T376] Call Trace:
[   23.905816][  T376]  <TASK>
[   23.905895][  T376]  dump_stack_lvl+0x82/0xd0
[   23.906051][  T376]  print_deadlock_bug+0x40a/0x650
[   23.906205][  T376]  validate_chain+0x5bf/0xae0
[   23.906357][  T376]  ? __pfx_validate_chain+0x10/0x10
[   23.906509][  T376]  ? hlock_class+0x4e/0x130
[   23.906659][  T376]  ? mark_lock+0x38/0x3e0
[   23.906773][  T376]  __lock_acquire+0xb9a/0x1680
[   23.906925][  T376]  lock_acquire.part.0+0xeb/0x330
[   23.907080][  T376]  ? blocking_notifier_call_chain+0x50/0x90
[   23.907264][  T376]  ? netconsole_process_cleanups_core+0x2e/0x3d0
[   23.907453][  T376]  ? __pfx_lock_acquire.part.0+0x10/0x10
[   23.907620][  T376]  ? trace_lock_acquire+0x14c/0x1f0
[   23.907775][  T376]  ? lock_acquire+0x32/0xc0
[   23.907926][  T376]  ? blocking_notifier_call_chain+0x50/0x90
[   23.908113][  T376]  down_read+0x9f/0x340
[   23.908230][  T376]  ? blocking_notifier_call_chain+0x50/0x90
[   23.908415][  T376]  ? __pfx_down_read+0x10/0x10
[   23.908562][  T376]  ? __lock_release+0x103/0x460
[   23.908721][  T376]  ? netconsole_netdev_event+0x2c1/0x620
[   23.908872][  T376]  ? __pfx___lock_release+0x10/0x10
[   23.909035][  T376]  blocking_notifier_call_chain+0x50/0x90
[   23.909272][  T376]  __netdev_upper_dev_unlink+0xd9/0x220
[   23.909516][  T376]  ? __pfx___netdev_upper_dev_unlink+0x10/0x10
[   23.909827][  T376]  ? __mutex_unlock_slowpath+0x14a/0x3d0
[   23.910070][  T376]  ? __pfx___mutex_unlock_slowpath+0x10/0x10
[   23.910373][  T376]  ? rtnl_is_locked+0x15/0x20
[   23.910631][  T376]  netdev_upper_dev_unlink+0x71/0xa0
[   23.910876][  T376]  ? __pfx_netdev_upper_dev_unlink+0x10/0x10
[   23.911170][  T376]  ? netconsole_netdev_event+0x2c1/0x620
[   23.911415][  T376]  ? mutex_is_locked+0x1c/0x60
[   23.911657][  T376]  ? rtnl_is_locked+0x15/0x20
[   23.911894][  T376]  ? netdev_master_upper_dev_get+0x13/0x120
[   23.912187][  T376]  vrf_device_event+0x78/0xe0 [vrf]
[   23.912439][  T376]  notifier_call_chain+0xcd/0x150
[   23.912681][  T376]  blocking_notifier_call_chain+0x66/0x90
[   23.912917][  T376]  unregister_netdevice_many_notify+0xa7b/0x1580
[   23.913213][  T376]  ? __lock_release+0x103/0x460
[   23.913455][  T376]  ? __pfx___lock_release+0x10/0x10
[   23.913700][  T376]  ? __pfx_unregister_netdevice_many_notify+0x10/0x10
[   23.913996][  T376]  ? hlock_class+0x4e/0x130
[   23.914246][  T376]  ? mark_held_locks+0x9e/0xe0
[   23.914488][  T376]  ? __pfx_vlan_info_rcu_free+0x10/0x10
[   23.914730][  T376]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[   23.915031][  T376]  rtnl_dellink+0x348/0xa40
[   23.915275][  T376]  ? __pfx_rtnl_dellink+0x10/0x10
[   23.915540][  T376]  ? find_held_lock+0x2c/0x110
[   23.915786][  T376]  ? __lock_release+0x103/0x460
[   23.916029][  T376]  ? rtnetlink_rcv_msg+0x6ef/0xc10
[   23.916267][  T376]  ? __pfx___lock_release+0x10/0x10
[   23.916422][  T376]  ? __pfx_lock_acquire.part.0+0x10/0x10
[   23.916628][  T376]  ? rtnetlink_rcv_msg+0x6ef/0xc10
[   23.916780][  T376]  ? __pfx_rtnl_dellink+0x10/0x10
[   23.916948][  T376]  rtnetlink_rcv_msg+0x712/0xc10
[   23.917099][  T376]  ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[   23.917261][  T376]  ? hlock_class+0x4e/0x130
[   23.917473][  T376]  ? mark_lock+0x38/0x3e0
[   23.917631][  T376]  ? __lock_acquire+0xb9a/0x1680
[   23.917812][  T376]  netlink_rcv_skb+0x130/0x360
[   23.918035][  T376]  ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[   23.918228][  T376]  ? __pfx_netlink_rcv_skb+0x10/0x10
[   23.918406][  T376]  ? netlink_deliver_tap+0x13e/0x340
[   23.918581][  T376]  ? netlink_deliver_tap+0xc3/0x340
[   23.918768][  T376]  netlink_unicast+0x44b/0x710
[   23.918934][  T376]  ? __pfx_netlink_unicast+0x10/0x10
[   23.919086][  T376]  ? find_held_lock+0x2c/0x110
[   23.919237][  T376]  netlink_sendmsg+0x723/0xbe0
[   23.919390][  T376]  ? __pfx_netlink_sendmsg+0x10/0x10
[   23.919594][  T376]  ____sys_sendmsg+0x7ac/0xa10
[   23.919789][  T376]  ? __pfx_____sys_sendmsg+0x10/0x10
[   23.919997][  T376]  ? __pfx_copy_msghdr_from_user+0x10/0x10
[   23.920244][  T376]  ___sys_sendmsg+0xee/0x170
[   23.920395][  T376]  ? __pfx____sys_sendmsg+0x10/0x10
[   23.920593][  T376]  ? kasan_save_stack+0x34/0x50
[   23.920745][  T376]  ? kasan_save_stack+0x24/0x50
[   23.920908][  T376]  ? __kasan_record_aux_stack+0x8e/0xa0
[   23.921061][  T376]  ? __call_rcu_common.constprop.0+0xa1/0x4b0
[   23.921255][  T376]  ? __x64_sys_close+0x7c/0xd0
[   23.921406][  T376]  ? do_syscall_64+0xc1/0x1d0
[   23.921555][  T376]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   23.921741][  T376]  ? __lock_acquire+0xb9a/0x1680
[   23.921908][  T376]  ? find_held_lock+0x2c/0x110
[   23.922069][  T376]  ? __lock_release+0x103/0x460
[   23.922217][  T376]  ? __virt_addr_valid+0x22b/0x430
[   23.922394][  T376]  ? __pfx___lock_release+0x10/0x10
[   23.922583][  T376]  ? __pfx_lock_acquire.part.0+0x10/0x10
[   23.922733][  T376]  __sys_sendmsg+0x109/0x1a0
[   23.922901][  T376]  ? __pfx___sys_sendmsg+0x10/0x10
[   23.923051][  T376]  ? __pfx_slab_free_after_rcu_debug+0x10/0x10
[   23.923243][  T376]  do_syscall_64+0xc1/0x1d0
[   23.923392][  T376]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   23.923636][  T376] RIP: 0033:0x7f24cdc049a7
[   23.923836][  T376] 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
[   23.924434][  T376] RSP: 002b:00007fffe60180d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.924742][  T376] RAX: ffffffffffffffda RBX: 00007fffe6018800 RCX: 00007f24cdc049a7
[   23.925028][  T376] RDX: 0000000000000000 RSI: 00007fffe6018140 RDI: 0000000000000005
[   23.925257][  T376] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[   23.925489][  T376] R10: 00007f24cdac2ef8 R11: 0000000000000246 R12: 0000000000000002
[   23.925760][  T376] R13: 00000000677904e3 R14: 0000000000498600 R15: 0000000000000000
[   23.926004][  T376]  </TASK>
[   23.941419][  T376] ip (376) used greatest stack depth: 23880 bytes left