=============================
WARNING: suspicious RCU usage
6.1.124-syzkaller #0 Not tainted
-----------------------------
net/mac80211/sta_info.c:361 suspicious rcu_dereference_protected() usage!

other info that might help us debug this:


rcu_scheduler_active = 2, debug_locks = 1
5 locks held by kworker/1:4/4297:
 #0: ffff888017c70938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7a9/0x11d0 kernel/workqueue.c:2267
 #1: ffffc90004367d20 ((work_completion)(&rdev->rfkill_block)){+.+.}-{0:0}, at: process_one_work+0x7a9/0x11d0 kernel/workqueue.c:2267
 #2: ffffffff8e50b828 (rtnl_mutex){+.+.}-{3:3}, at: cfg80211_rfkill_set_block net/wireless/core.c:306 [inline]
 #2: ffffffff8e50b828 (rtnl_mutex){+.+.}-{3:3}, at: cfg80211_rfkill_block_work+0xe/0x30 net/wireless/core.c:319
 #3: ffff8880732307c8 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: wiphy_lock include/net/cfg80211.h:5639 [inline]
 #3: ffff8880732307c8 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: cfg80211_netdev_notifier_call+0x4d4/0x1530 net/wireless/core.c:1504
 #4: ffff8880679e0d40 (&wdev->mtx){+.+.}-{3:3}, at: wdev_lock net/wireless/core.h:231 [inline]
 #4: ffff8880679e0d40 (&wdev->mtx){+.+.}-{3:3}, at: cfg80211_leave net/wireless/core.c:1342 [inline]
 #4: ffff8880679e0d40 (&wdev->mtx){+.+.}-{3:3}, at: cfg80211_netdev_notifier_call+0x4e2/0x1530 net/wireless/core.c:1505

stack backtrace:
CPU: 1 PID: 4297 Comm: kworker/1:4 Not tainted 6.1.124-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events cfg80211_rfkill_block_work
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 lockdep_rcu_suspicious+0x21c/0x330 kernel/locking/lockdep.c:6608
 sta_remove_link+0x353/0x4a0 net/mac80211/sta_info.c:360
 sta_info_free+0x4f/0x750 net/mac80211/sta_info.c:405
 ieee80211_ibss_disconnect+0x3a3/0x700 net/mac80211/ibss.c:704
 ieee80211_ibss_leave+0x21/0x130 net/mac80211/ibss.c:1868
 rdev_leave_ibss net/wireless/rdev-ops.h:561 [inline]
 __cfg80211_leave_ibss+0x1dd/0x470 net/wireless/ibss.c:211
 cfg80211_leave net/wireless/core.c:1343 [inline]
 cfg80211_netdev_notifier_call+0x4ed/0x1530 net/wireless/core.c:1505
 notifier_call_chain kernel/notifier.c:87 [inline]
 raw_notifier_call_chain+0xd0/0x170 kernel/notifier.c:455
 call_netdevice_notifiers_info net/core/dev.c:1970 [inline]
 call_netdevice_notifiers_extack net/core/dev.c:2008 [inline]
 call_netdevice_notifiers net/core/dev.c:2022 [inline]
 __dev_close_many+0x1e3/0x3c0 net/core/dev.c:1515
 dev_close_many+0x22a/0x530 net/core/dev.c:1566
 dev_close+0x1b3/0x2b0 net/core/dev.c:1592
 cfg80211_shutdown_all_interfaces+0xb7/0x1c0 net/wireless/core.c:275
 cfg80211_rfkill_set_block net/wireless/core.c:307 [inline]
 cfg80211_rfkill_block_work+0x1d/0x30 net/wireless/core.c:319
 process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292
 worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
 kthread+0x28d/0x320 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>