wifi: mac80211: fix RCU usage in peer probing

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Converting the station and chanctx lookups to wiphy_dereference()
was correct for the function itself but removed the rcu_read_lock()
for the later transmit, which requires it, as well. Fix that.

Found with the ap_open_poll_sta hwsim test, which reports

  net/mac80211/tx.c:608 suspicious rcu_dereference_check() usage!

(and four more like it).

Fixes: 1c3f880ed0 ("wifi: mac80211: implement STA-mode peer probing")
Link: https://patch.msgid.link/20260802104010.6c09477032c4.If024b480b96bf9fe7baa821ed48b80be322d1e44@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

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Johannes Berg 2026-08-02 10:40:10 +02:00

parent aa0069bd92

commit b17e206e99

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net/mac80211/cfg.c

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