syzbot

wlan1: authenticate with 08:02:11:00:00:00
wlan1: No legacy rates in association response
=============================
WARNING: suspicious RCU usage
6.1.114-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
4 locks held by kworker/1:1/24:
 #0: ffff0000c0020938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x664/0x1404 kernel/workqueue.c:2265
 #1: ffff80001d217c20 ((work_completion)(&rdev->conn_work)){+.+.}-{0:0}, at: process_one_work+0x6a8/0x1404 kernel/workqueue.c:2267
 #2: ffff0000d8e187c8 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: wiphy_lock include/net/cfg80211.h:5639 [inline]
 #2: ffff0000d8e187c8 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: cfg80211_conn_work+0xc4/0x428 net/wireless/sme.c:253
 #3: ffff0000d267cd40 (&wdev->mtx){+.+.}-{3:3}, at: wdev_lock net/wireless/core.h:231 [inline]
 #3: ffff0000d267cd40 (&wdev->mtx){+.+.}-{3:3}, at: cfg80211_conn_work+0x138/0x428 net/wireless/sme.c:259

stack backtrace:
CPU: 1 PID: 24 Comm: kworker/1:1 Not tainted 6.1.114-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events cfg80211_conn_work
Call trace:
 dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
 dump_stack+0x1c/0x58 lib/dump_stack.c:113
 lockdep_rcu_suspicious+0x260/0x464 kernel/locking/lockdep.c:6608
 sta_remove_link+0x38c/0x474 net/mac80211/sta_info.c:360
 sta_info_free+0x68/0x2ec net/mac80211/sta_info.c:405
 ieee80211_prep_connection+0xbdc/0xf34
 ieee80211_mgd_auth+0x8d0/0xd9c net/mac80211/mlme.c:6756
 ieee80211_auth+0x28/0x38 net/mac80211/cfg.c:2791
 rdev_auth net/wireless/rdev-ops.h:473 [inline]
 cfg80211_mlme_auth+0x4a4/0x980 net/wireless/mlme.c:285
 cfg80211_conn_do_work+0x3b8/0xb84 net/wireless/sme.c:182
 cfg80211_conn_work+0x248/0x428 net/wireless/sme.c:274
 process_one_work+0x7ac/0x1404 kernel/workqueue.c:2292
 worker_thread+0x8e4/0xfec kernel/workqueue.c:2439
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:864