syzbot

======================================================
WARNING: possible circular locking dependency detected
6.12.0-rc7-syzkaller-00189-ge8bdb3c8be08 #0 Not tainted
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kworker/u32:19/8554 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}:
       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
       team_port_add drivers/net/team/team_core.c:1216 [inline]
       team_add_slave+0xacd/0x20e0 drivers/net/team/team_core.c:1976
       do_setlink+0xd24/0x41c0 net/core/rtnetlink.c:2936
       rtnl_newlink+0x67/0xa0 net/core/rtnetlink.c:3772
       netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2536
       netlink_sendmsg+0x8b8/0xd70 net/netlink/af_netlink.c:1886
       sock_sendmsg_nosec net/socket.c:729 [inline]
       __sock_sendmsg net/socket.c:744 [inline]
       ____sys_sendmsg+0xaaf/0xc90 net/socket.c:2607
       ___sys_sendmsg+0x135/0x1e0 net/socket.c:2661
       entry_SYSCALL_64_after_hwframe+0x77/0x7f
-> #0 (team->team_lock_key#5){+.+.}-{3:3}:
       __mutex_lock_common kernel/locking/mutex.c:608 [inline]
       __mutex_lock+0x175/0x9c0 kernel/locking/mutex.c:752
       team_del_slave+0x31/0x1b0 drivers/net/team/team_core.c:1990
       team_device_event+0xd0/0x770 drivers/net/team/team_core.c:2984
       notifier_call_chain+0xb9/0x410 kernel/notifier.c:93
       call_netdevice_notifiers_info+0xbe/0x140 net/core/dev.c:1996
       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

other info that might help us debug this:


       CPU0                    CPU1
       ----                    ----
                               lock(&rdev->wiphy.mtx);

 *** DEADLOCK ***

 #0: ffff88801befc948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
 #2: ffffffff8fecded0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xbb/0xb40 net/core/net_namespace.c:580
 #3: ffffffff8fee38e8 (rtnl_mutex){+.+.}-{3:3}, at: ieee80211_unregister_hw+0x4d/0x3a0 net/mac80211/main.c:1664
 #4: ffff88802b0f8768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: wiphy_lock include/net/cfg80211.h:6014 [inline]
 #4: ffff88802b0f8768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: ieee80211_remove_interfaces+0xfe/0x760 net/mac80211/iface.c:2275

stack backtrace:
CPU: 1 UID: 0 PID: 8554 Comm: kworker/u32:19 Not tainted 6.12.0-rc7-syzkaller-00189-ge8bdb3c8be08 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: netns cleanup_net
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
 print_circular_bug+0x41c/0x610 kernel/locking/lockdep.c:2074
 check_noncircular+0x31a/0x400 kernel/locking/lockdep.c:2206
 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
 lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5825
 __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
 notifier_call_chain+0xb9/0x410 kernel/notifier.c:93
 call_netdevice_notifiers_info+0xbe/0x140 net/core/dev.c:1996
 call_netdevice_notifiers_extack net/core/dev.c:2034 [inline]
 call_netdevice_notifiers net/core/dev.c:2048 [inline]
 unregister_netdevice_many_notify+0x8d5/0x1e50 net/core/dev.c:11407
 unregister_netdevice_many net/core/dev.c:11469 [inline]
 unregister_netdevice_queue+0x307/0x3f0 net/core/dev.c:11343
 unregister_netdevice include/linux/netdevice.h:3118 [inline]
 _cfg80211_unregister_wdev+0x64b/0x830 net/wireless/core.c:1211
 ieee80211_remove_interfaces+0x36d/0x760 net/mac80211/iface.c:2300
 ieee80211_unregister_hw+0x55/0x3a0 net/mac80211/main.c:1671
 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
 ops_exit_list+0xb0/0x180 net/core/net_namespace.c:173
 cleanup_net+0x5b7/0xb40 net/core/net_namespace.c:626
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229
 process_scheduled_works kernel/workqueue.c:3310 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
 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
hsr_slave_0: left promiscuous mode
hsr_slave_1: left promiscuous mode
batman_adv: batadv0: Interface deactivated: batadv_slave_1
batman_adv: batadv0: Removing interface: batadv_slave_1
hsr_slave_0: left promiscuous mode
batman_adv: batadv0: Removing interface: batadv_slave_0
batman_adv: batadv0: Removing interface: batadv_slave_1
veth1_vlan: left promiscuous mode