syzbot

======================================================
WARNING: possible circular locking dependency detected
6.12.0-rc6-syzkaller-00192-gf1dce1f09380 #0 Not tainted
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kworker/u32:5/188 is trying to acquire lock:
but task is already holding lock:

which lock already depends on the new lock.

the existing dependency chain (in reverse order) is:
-> #1 (&rdev->wiphy.mtx){+.+.}-{3:3}:
       __mutex_lock_common kernel/locking/mutex.c:608 [inline]
       __mutex_lock+0x175/0x9c0 kernel/locking/mutex.c:752
       wiphy_lock include/net/cfg80211.h:6014 [inline]
       ieee80211_open+0x12f/0x260 net/mac80211/iface.c:449
       __dev_open+0x2d4/0x4e0 net/core/dev.c:1476
       do_setlink+0xd24/0x41c0 net/core/rtnetlink.c:2936
       rtnetlink_rcv_msg+0x3c7/0xea0 net/core/rtnetlink.c:6675
       netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2551
       netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
       netlink_unicast+0x53c/0x7f0 net/netlink/af_netlink.c:1357
       netlink_sendmsg+0x8b8/0xd70 net/netlink/af_netlink.c:1901

-> #0 (team->team_lock_key#2){+.+.}-{3:3}:
       check_prev_add kernel/locking/lockdep.c:3161 [inline]
       check_prevs_add kernel/locking/lockdep.c:3280 [inline]
       validate_chain kernel/locking/lockdep.c:3904 [inline]
       __lock_acquire+0x250b/0x3ce0 kernel/locking/lockdep.c:5202
       notifier_call_chain+0xb9/0x410 kernel/notifier.c:93
       ieee80211_remove_interfaces+0x36d/0x760 net/mac80211/iface.c:2300
       mac80211_hwsim_del_radio drivers/net/wireless/virtual/mac80211_hwsim.c:5625 [inline]
       hwsim_exit_net+0x3ad/0x7d0 drivers/net/wireless/virtual/mac80211_hwsim.c:6505
       cleanup_net+0x5b7/0xb40 net/core/net_namespace.c:626
       process_scheduled_works kernel/workqueue.c:3310 [inline]
       worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
       ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147

other info that might help us debug this:


       CPU0                    CPU1
  lock(&rdev->wiphy.mtx);
  lock(team->team_lock_key#2);

 *** DEADLOCK ***

 #3: ffffffff8fee32a8 (rtnl_mutex){+.+.}-{3:3}, at: ieee80211_unregister_hw+0x4d/0x3a0 net/mac80211/main.c:1664

stack backtrace:
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
 check_prev_add kernel/locking/lockdep.c:3161 [inline]
 check_prevs_add kernel/locking/lockdep.c:3280 [inline]
 validate_chain kernel/locking/lockdep.c:3904 [inline]
 __lock_acquire+0x250b/0x3ce0 kernel/locking/lockdep.c:5202
 __mutex_lock_common kernel/locking/mutex.c:608 [inline]
 __mutex_lock+0x175/0x9c0 kernel/locking/mutex.c:752
 team_device_event+0xd0/0x770 drivers/net/team/team_core.c:2984
 call_netdevice_notifiers_info+0xbe/0x140 net/core/dev.c:1996
 unregister_netdevice_many net/core/dev.c:11469 [inline]
 unregister_netdevice_queue+0x307/0x3f0 net/core/dev.c:11343
 cleanup_net+0x5b7/0xb40 net/core/net_namespace.c:626
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
team0: Port device wlan1 removed