[PATCH] wifi: mac80211: mlme: Fix double unlock on assoc success handling

* [PATCH] wifi: mac80211: mlme: Fix double unlock on assoc success handling
@ 2022-09-25 14:34 Rafael Mendonca
  0 siblings, 0 replies; only message in thread
From: Rafael Mendonca @ 2022-09-25 14:34 UTC (permalink / raw)
  To: Johannes Berg, David S. Miller, Eric Dumazet, Jakub Kicinski,
	Paolo Abeni
  Cc: Rafael Mendonca, Johannes Berg, linux-wireless, netdev, linux-kernel

Commit 6911458dc428 ("wifi: mac80211: mlme: refactor assoc success
handling") moved the per-link setup out of ieee80211_assoc_success() into a
new function ieee80211_assoc_config_link() but missed to remove the unlock
of 'sta_mtx' in case of HE capability/operation missing on HE AP, which
leads to a double unlock:

ieee80211_assoc_success() {
    ...
    ieee80211_assoc_config_link() {
        ...
        if (!(link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_HE) &&
            (!elems->he_cap || !elems->he_operation)) {
            mutex_unlock(&sdata->local->sta_mtx);
            ...
        }
        ...
    }
    ...
    mutex_unlock(&sdata->local->sta_mtx);
    ...
}

Fixes: 6911458dc428 ("wifi: mac80211: mlme: refactor assoc success handling")
Signed-off-by: Rafael Mendonca <rafaelmendsr@gmail.com>
---
 net/mac80211/mlme.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 5265d2b6db12..6ca9c4f2775c 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -4040,7 +4040,6 @@ static bool ieee80211_assoc_config_link(struct ieee80211_link_data *link,
 
 	if (!(link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_HE) &&
 	    (!elems->he_cap || !elems->he_operation)) {
-		mutex_unlock(&sdata->local->sta_mtx);
 		sdata_info(sdata,
 			   "HE AP is missing HE capability/operation\n");
 		ret = false;
-- 
2.34.1


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