netlink: 28 bytes leftover after parsing attributes in process `syz.0.1493'.
============================================
WARNING: possible recursive locking detected
6.12.0-rc4-syzkaller-g7678c1b2735a #0 Not tainted
--------------------------------------------
syz.0.1493/11616 is trying to acquire lock:
ffff0000ec758d40 (team->team_lock_key#3){+.+.}-{3:3}, at: team_port_change_check+0x5c/0x228 drivers/net/team/team_core.c:2950

but task is already holding lock:
ffff0000ec758d40 (team->team_lock_key#3){+.+.}-{3:3}, at: team_add_slave+0xa4/0x236c drivers/net/team/team_core.c:1975

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(team->team_lock_key#3);
  lock(team->team_lock_key#3);

 *** DEADLOCK ***

 May be due to missing lock nesting notation

2 locks held by syz.0.1493/11616:
 #0: ffff8000927131a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
 #0: ffff8000927131a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x5e8/0xa9c net/core/rtnetlink.c:6672
 #1: ffff0000ec758d40 (team->team_lock_key#3){+.+.}-{3:3}, at: team_add_slave+0xa4/0x236c drivers/net/team/team_core.c:1975

stack backtrace:
CPU: 1 UID: 0 PID: 11616 Comm: syz.0.1493 Not tainted 6.12.0-rc4-syzkaller-g7678c1b2735a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:484 (C)
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 print_deadlock_bug+0x4e8/0x668 kernel/locking/lockdep.c:3037
 check_deadlock kernel/locking/lockdep.c:3089 [inline]
 validate_chain kernel/locking/lockdep.c:3891 [inline]
 __lock_acquire+0x6180/0x77c8 kernel/locking/lockdep.c:5202
 lock_acquire+0x240/0x728 kernel/locking/lockdep.c:5825
 __mutex_lock_common+0x190/0x21a0 kernel/locking/mutex.c:608
 __mutex_lock kernel/locking/mutex.c:752 [inline]
 mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:804
 team_port_change_check+0x5c/0x228 drivers/net/team/team_core.c:2950
 team_device_event+0x430/0x4d4
 notifier_call_chain+0x1b4/0x538 kernel/notifier.c:93
 raw_notifier_call_chain+0x3c/0x50 kernel/notifier.c:461
 __dev_notify_flags+0x2c4/0x550
 dev_change_flags+0xd0/0x15c net/core/dev.c:8918
 vlan_device_event+0x3f4/0x1814 net/8021q/vlan.c:468
 notifier_call_chain+0x1b4/0x538 kernel/notifier.c:93
 raw_notifier_call_chain+0x3c/0x50 kernel/notifier.c:461
 call_netdevice_notifiers_info net/core/dev.c:1996 [inline]
 call_netdevice_notifiers_extack net/core/dev.c:2034 [inline]
 call_netdevice_notifiers net/core/dev.c:2048 [inline]
 dev_open+0x1b0/0x248 net/core/dev.c:1517
 team_port_add drivers/net/team/team_core.c:1216 [inline]
 team_add_slave+0x7b0/0x236c drivers/net/team/team_core.c:1976
 do_set_master net/core/rtnetlink.c:2730 [inline]
 do_setlink+0xc30/0x3778 net/core/rtnetlink.c:2936
 __rtnl_newlink net/core/rtnetlink.c:3725 [inline]
 rtnl_newlink+0x14c4/0x1bd0 net/core/rtnetlink.c:3772
 rtnetlink_rcv_msg+0x630/0xa9c net/core/rtnetlink.c:6675
 netlink_rcv_skb+0x214/0x3c4 net/netlink/af_netlink.c:2551
 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6693
 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
 netlink_unicast+0x668/0x8a4 net/netlink/af_netlink.c:1357
 netlink_sendmsg+0x7a4/0xa8c net/netlink/af_netlink.c:1901
 sock_sendmsg_nosec net/socket.c:729 [inline]
 __sock_sendmsg net/socket.c:744 [inline]
 ____sys_sendmsg+0x56c/0x840 net/socket.c:2607
 ___sys_sendmsg net/socket.c:2661 [inline]
 __sys_sendmsg+0x26c/0x33c net/socket.c:2690
 __do_sys_sendmsg net/socket.c:2699 [inline]
 __se_sys_sendmsg net/socket.c:2697 [inline]
 __arm64_sys_sendmsg+0x80/0x94 net/socket.c:2697
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744
 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600