[ 14.195811][ T309] 8021q: 802.1Q VLAN Support v1.8
[ 15.005378][ T320] gre: GRE over IPv4 demultiplexor driver
[ 15.018398][ T320] ip_gre: GRE over IPv4 tunneling driver
[ 15.373673][ T327] ip (327) used greatest stack depth: 23648 bytes left
[ 19.669879][ T387] GACT probability NOT on
[ 83.124581][ T680]
[ 83.124751][ T680] ============================================
[ 83.124964][ T680] WARNING: possible recursive locking detected
[ 83.125169][ T680] 6.13.0-rc5-virtme #1 Not tainted
[ 83.125332][ T680] --------------------------------------------
[ 83.125537][ T680] ip/680 is trying to acquire lock:
[ 83.125720][ T680] ffffffff941d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90
[ 83.126071][ T680]
[ 83.126071][ T680] but task is already holding lock:
[ 83.126315][ T680] ffffffff941d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90
[ 83.126645][ T680]
[ 83.126645][ T680] other info that might help us debug this:
[ 83.126890][ T680] Possible unsafe locking scenario:
[ 83.126890][ T680]
[ 83.127136][ T680] CPU0
[ 83.127269][ T680] ----
[ 83.127401][ T680] lock((netdev_chain).rwsem);
[ 83.127567][ T680] lock((netdev_chain).rwsem);
[ 83.127734][ T680]
[ 83.127734][ T680] *** DEADLOCK ***
[ 83.127734][ T680]
[ 83.127974][ T680] May be due to missing lock nesting notation
[ 83.127974][ T680]
[ 83.128217][ T680] 2 locks held by ip/680:
[ 83.128345][ T680] #0: ffffffff941e7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40
[ 83.128659][ T680] #1: ffffffff941d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90
[ 83.128991][ T680]
[ 83.128991][ T680] stack backtrace:
[ 83.129199][ T680] CPU: 0 UID: 0 PID: 680 Comm: ip Not tainted 6.13.0-rc5-virtme #1
[ 83.129462][ T680] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 83.129667][ T680] Call Trace:
[ 83.129782][ T680] <TASK>
[ 83.129860][ T680] dump_stack_lvl+0x82/0xd0
[ 83.130017][ T680] print_deadlock_bug+0x40a/0x650
[ 83.130167][ T680] validate_chain+0x5bf/0xae0
[ 83.130322][ T680] ? __pfx_validate_chain+0x10/0x10
[ 83.130489][ T680] ? hlock_class+0x4e/0x130
[ 83.130657][ T680] ? mark_lock+0x38/0x3e0
[ 83.130789][ T680] __lock_acquire+0xb9a/0x1680
[ 83.130955][ T680] lock_acquire.part.0+0xeb/0x330
[ 83.131120][ T680] ? blocking_notifier_call_chain+0x50/0x90
[ 83.131331][ T680] ? netconsole_process_cleanups_core+0x2e/0x3d0
[ 83.131544][ T680] ? __pfx_lock_acquire.part.0+0x10/0x10
[ 83.131719][ T680] ? trace_lock_acquire+0x14c/0x1f0
[ 83.131882][ T680] ? lock_acquire+0x32/0xc0
[ 83.132048][ T680] ? blocking_notifier_call_chain+0x50/0x90
[ 83.132249][ T680] down_read+0x9f/0x340
[ 83.132371][ T680] ? blocking_notifier_call_chain+0x50/0x90
[ 83.132574][ T680] ? __pfx_down_read+0x10/0x10
[ 83.132746][ T680] ? __lock_release+0x103/0x460
[ 83.132917][ T680] ? netconsole_netdev_event+0x2c1/0x620
[ 83.133079][ T680] ? __pfx___lock_release+0x10/0x10
[ 83.133248][ T680] blocking_notifier_call_chain+0x50/0x90
[ 83.133420][ T680] __netdev_upper_dev_unlink+0xd9/0x220
[ 83.133593][ T680] ? __pfx___netdev_upper_dev_unlink+0x10/0x10
[ 83.133808][ T680] ? __mutex_unlock_slowpath+0x14a/0x3d0
[ 83.133980][ T680] ? __pfx___mutex_unlock_slowpath+0x10/0x10
[ 83.134195][ T680] ? rtnl_is_locked+0x15/0x20
[ 83.134366][ T680] netdev_upper_dev_unlink+0x71/0xa0
[ 83.134531][ T680] ? __pfx_netdev_upper_dev_unlink+0x10/0x10
[ 83.134733][ T680] ? netconsole_netdev_event+0x2c1/0x620
[ 83.134897][ T680] ? mutex_is_locked+0x1c/0x60
[ 83.135066][ T680] ? rtnl_is_locked+0x15/0x20
[ 83.135231][ T680] ? netdev_master_upper_dev_get+0x13/0x120
[ 83.135449][ T680] vrf_device_event+0x78/0xe0 [vrf]
[ 83.135616][ T680] notifier_call_chain+0xcd/0x150
[ 83.135786][ T680] blocking_notifier_call_chain+0x66/0x90
[ 83.135946][ T680] unregister_netdevice_many_notify+0xa7b/0x1580
[ 83.136149][ T680] ? hlock_class+0x4e/0x130
[ 83.136312][ T680] ? mark_lock+0x38/0x3e0
[ 83.136443][ T680] ? __pfx_unregister_netdevice_many_notify+0x10/0x10
[ 83.136645][ T680] ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 83.136859][ T680] ? kfree+0xf3/0x330
[ 83.136984][ T680] ? vlan_vid_del+0x310/0x5e0
[ 83.137155][ T680] ? vlan_vid_del+0x310/0x5e0
[ 83.137326][ T680] rtnl_dellink+0x348/0xa40
[ 83.137491][ T680] ? __pfx_rtnl_dellink+0x10/0x10
[ 83.137666][ T680] ? find_held_lock+0x2c/0x110
[ 83.137851][ T680] ? __lock_release+0x103/0x460
[ 83.138027][ T680] ? rtnetlink_rcv_msg+0x6ef/0xc10
[ 83.138188][ T680] ? __pfx___lock_release+0x10/0x10
[ 83.138350][ T680] ? __pfx_lock_acquire.part.0+0x10/0x10
[ 83.138527][ T680] ? rtnetlink_rcv_msg+0x6ef/0xc10
[ 83.138687][ T680] ? __pfx_rtnl_dellink+0x10/0x10
[ 83.138861][ T680] rtnetlink_rcv_msg+0x712/0xc10
[ 83.139027][ T680] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 83.139193][ T680] ? hlock_class+0x4e/0x130
[ 83.139360][ T680] ? mark_lock+0x38/0x3e0
[ 83.139492][ T680] ? __lock_acquire+0xb9a/0x1680
[ 83.139666][ T680] netlink_rcv_skb+0x130/0x360
[ 83.139829][ T680] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 83.139988][ T680] ? __pfx_netlink_rcv_skb+0x10/0x10
[ 83.140165][ T680] ? netlink_deliver_tap+0x13e/0x340
[ 83.140329][ T680] ? netlink_deliver_tap+0xc3/0x340
[ 83.140489][ T680] netlink_unicast+0x44b/0x710
[ 83.140650][ T680] ? __pfx_netlink_unicast+0x10/0x10
[ 83.140810][ T680] ? find_held_lock+0x2c/0x110
[ 83.140973][ T680] netlink_sendmsg+0x723/0xbe0
[ 83.141133][ T680] ? __pfx_netlink_sendmsg+0x10/0x10
[ 83.141301][ T680] ____sys_sendmsg+0x7ac/0xa10
[ 83.141458][ T680] ? __pfx_____sys_sendmsg+0x10/0x10
[ 83.141618][ T680] ? __pfx_copy_msghdr_from_user+0x10/0x10
[ 83.141822][ T680] ___sys_sendmsg+0xee/0x170
[ 83.141968][ T680] ? __pfx____sys_sendmsg+0x10/0x10
[ 83.142117][ T680] ? kasan_save_stack+0x34/0x50
[ 83.142263][ T680] ? kasan_save_stack+0x24/0x50
[ 83.142408][ T680] ? __kasan_record_aux_stack+0x8e/0xa0
[ 83.142564][ T680] ? __call_rcu_common.constprop.0+0xa1/0x4b0
[ 83.142763][ T680] ? __x64_sys_close+0x7c/0xd0
[ 83.142921][ T680] ? do_syscall_64+0xc1/0x1d0
[ 83.143069][ T680] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 83.143253][ T680] ? __lock_acquire+0xb9a/0x1680
[ 83.143400][ T680] ? find_held_lock+0x2c/0x110
[ 83.143550][ T680] ? __lock_release+0x103/0x460
[ 83.143702][ T680] ? __virt_addr_valid+0x22b/0x430
[ 83.143852][ T680] ? __pfx___lock_release+0x10/0x10
[ 83.144001][ T680] ? __pfx_lock_acquire.part.0+0x10/0x10
[ 83.144148][ T680] __sys_sendmsg+0x109/0x1a0
[ 83.144292][ T680] ? __pfx___sys_sendmsg+0x10/0x10
[ 83.144439][ T680] ? __pfx_slab_free_after_rcu_debug+0x10/0x10
[ 83.144632][ T680] do_syscall_64+0xc1/0x1d0
[ 83.144787][ T680] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 83.144970][ T680] RIP: 0033:0x7fd7feb739a7
[ 83.145128][ T680] 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
[ 83.145658][ T680] RSP: 002b:00007ffe599e4378 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 83.145917][ T680] RAX: ffffffffffffffda RBX: 00007ffe599e4aa0 RCX: 00007fd7feb739a7
[ 83.146168][ T680] RDX: 0000000000000000 RSI: 00007ffe599e43e0 RDI: 0000000000000005
[ 83.146422][ T680] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[ 83.146672][ T680] R10: 00007fd7fea31ef8 R11: 0000000000000246 R12: 0000000000000002
[ 83.146928][ T680] R13: 000000006779034f R14: 0000000000498600 R15: 0000000000000000
[ 83.147182][ T680] </TASK>
[ 83.169854][ T680] ip (680) used greatest stack depth: 23552 bytes left