[syzbot] WARNING: suspicious RCU usage in ieee80211_tx_h_select_key

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: ce522ba9ef7e Linux 5.18-rc2
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=17b1ddc4f00000
kernel config: https://syzkaller.appspot.com/x/.config?x=9ac56d6828346c4e
dashboard link: https://syzkaller.appspot.com/bug?extid=e550ebeb0bc610768394
compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2

Unfortunately, I don't have any reproducer for this issue yet.

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+e550eb...@syzkaller.appspotmail.com

=============================
WARNING: suspicious RCU usage
5.18.0-rc2-syzkaller #0 Not tainted
-----------------------------
net/mac80211/tx.c:604 suspicious rcu_dereference_check() usage!

other info that might help us debug this:


rcu_scheduler_active = 2, debug_locks = 1
3 locks held by kworker/u4:7/5407:
#0: ffff888023e70938 ((wq_completion)phy24){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
#1: ffffc90002fffd00 ((work_completion)(&(&data->hw_scan)->work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
#2: ffff88801c127128 (&data->mutex){+.+.}-{3:3}, at: hw_scan_work+0xbd/0xcf0 drivers/net/wireless/mac80211_hwsim.c:2431

stack backtrace:
CPU: 0 PID: 5407 Comm: kworker/u4:7 Not tainted 5.18.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: phy24 hw_scan_work
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
ieee80211_tx_h_select_key+0x6ba/0x14a0 net/mac80211/tx.c:604
invoke_tx_handlers_early+0x9db/0x1cd0 net/mac80211/tx.c:1798
invoke_tx_handlers net/mac80211/tx.c:1862 [inline]
ieee80211_tx_prepare_skb+0x1c0/0x4d0 net/mac80211/tx.c:1885
hw_scan_work+0x7e8/0xcf0 drivers/net/wireless/mac80211_hwsim.c:2478
process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30
</TASK>


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[syzbot]

Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.