======================================================
WARNING: possible circular locking dependency detected
6.12.0-rc7-syzkaller #0 Not tainted
------------------------------------------------------
kworker/u32:8/1140 is trying to acquire lock:
but task is already holding lock:
ffff88804b218768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: wiphy_lock include/net/cfg80211.h:6014 [inline]
ffff88804b218768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: ieee80211_remove_interfaces+0xfe/0x760 net/mac80211/iface.c:2275
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
dev_open net/core/dev.c:1512 [inline]
dev_open+0xf4/0x160 net/core/dev.c:1505
team_port_add drivers/net/team/team_core.c:1216 [inline]
team_add_slave+0xacd/0x20e0 drivers/net/team/team_core.c:1976
do_set_master+0x1bc/0x230 net/core/rtnetlink.c:2730
do_setlink+0xd24/0x41c0 net/core/rtnetlink.c:2936
__rtnl_newlink+0xc35/0x1920 net/core/rtnetlink.c:3725
rtnl_newlink+0x67/0xa0 net/core/rtnetlink.c:3772
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
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
__sys_sendmsg+0x117/0x1f0 net/socket.c:2690
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
-> #0 (team->team_lock_key){+.+.}-{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
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_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
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
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&rdev->wiphy.mtx);
lock(team->team_lock_key);
lock(&rdev->wiphy.mtx);
lock(team->team_lock_key);
*** DEADLOCK ***
5 locks held by kworker/u32:8/1140:
#0: ffff88801befc948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc90006177d80 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffffffff8fecd9d0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xbb/0xb40 net/core/net_namespace.c:580
#3: ffffffff8fee33e8 (rtnl_mutex){+.+.}-{3:3}, at: ieee80211_unregister_hw+0x4d/0x3a0 net/mac80211/main.c:1664
#4: ffff88804b218768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: wiphy_lock include/net/cfg80211.h:6014 [inline]
#4: ffff88804b218768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: ieee80211_remove_interfaces+0xfe/0x760 net/mac80211/iface.c:2275
stack backtrace:
CPU: 0 UID: 0 PID: 1140 Comm: kworker/u32:8 Not tainted 6.12.0-rc7-syzkaller #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_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
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>