team0: Port device vlan0 added
netlink: 'syz-executor194': attribute type 10 has an invalid length.
veth0_vlan: left promiscuous mode
veth0_vlan: entered promiscuous mode
============================================
WARNING: possible recursive locking detected
6.9.0-rc6-syzkaller-01461-g5829614a7b3b #0 Not tainted
--------------------------------------------
syz-executor194/5088 is trying to acquire lock:
ffff8880204bcd20 (team->team_lock_key){+.+.}-{3:3}, at: team_port_change_check+0x51/0x1e0 drivers/net/team/team_core.c:2950

but task is already holding lock:
ffff8880204bcd20 (team->team_lock_key){+.+.}-{3:3}, at: team_add_slave+0xad/0x2750 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);
  lock(team->team_lock_key);

 *** DEADLOCK ***

 May be due to missing lock nesting notation

2 locks held by syz-executor194/5088:
 #0: ffffffff8f5a8a08 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
 #0: ffffffff8f5a8a08 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x10d0 net/core/rtnetlink.c:6591
 #1: ffff8880204bcd20 (team->team_lock_key){+.+.}-{3:3}, at: team_add_slave+0xad/0x2750 drivers/net/team/team_core.c:1975

stack backtrace:
CPU: 0 PID: 5088 Comm: syz-executor194 Not tainted 6.9.0-rc6-syzkaller-01461-g5829614a7b3b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
 check_deadlock kernel/locking/lockdep.c:3062 [inline]
 validate_chain+0x15c1/0x58e0 kernel/locking/lockdep.c:3856
 __lock_acquire+0x1346/0x1fd0 kernel/locking/lockdep.c:5137
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754
 __mutex_lock_common kernel/locking/mutex.c:608 [inline]
 __mutex_lock+0x136/0xd70 kernel/locking/mutex.c:752
 team_port_change_check+0x51/0x1e0 drivers/net/team/team_core.c:2950
 team_device_event+0x4e6/0x5b0 drivers/net/team/team_core.c:2973
 notifier_call_chain+0x19f/0x3e0 kernel/notifier.c:93
 __dev_notify_flags+0x207/0x400
 dev_change_flags+0xf0/0x1a0 net/core/dev.c:8854
 vlan_device_event+0x1b81/0x1de0 net/8021q/vlan.c:468
 notifier_call_chain+0x19f/0x3e0 kernel/notifier.c:93
 call_netdevice_notifiers_extack net/core/dev.c:2031 [inline]
 call_netdevice_notifiers net/core/dev.c:2045 [inline]
 dev_open+0x13a/0x1b0 net/core/dev.c:1514
 team_port_add drivers/net/team/team_core.c:1216 [inline]
 team_add_slave+0x9b3/0x2750 drivers/net/team/team_core.c:1976
 do_set_master net/core/rtnetlink.c:2685 [inline]
 do_setlink+0xe70/0x41f0 net/core/rtnetlink.c:2891
 __rtnl_newlink net/core/rtnetlink.c:3680 [inline]
 rtnl_newlink+0x180b/0x20a0 net/core/rtnetlink.c:3727
 rtnetlink_rcv_msg+0x89b/0x10d0 net/core/rtnetlink.c:6594
 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2564
 netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline]
 netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1361
 netlink_sendmsg+0x8e1/0xcb0 net/netlink/af_netlink.c:1905
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0x221/0x270 net/socket.c:745
 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584
 ___sys_sendmsg net/socket.c:2638 [inline]
 __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe8a4b0db09
Code: 48 83 c4 28 c3 e8 d7 19 00 00 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffef059e518 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fe8a4b5b3d3 RCX: 00007fe8a4b0db09
RDX: 0000000000000000 RSI: 0000000020000600 RDI: 0000000000000004
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000246 R12: 00007ffef059e550
R13: 00007fe8a4b5b004 R14: 00007ffef059e53c R15: 0000000000000003
 </TASK>