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Message-ID: <20240116200432.260016-22-sashal@kernel.org>
Date: Tue, 16 Jan 2024 15:04:16 -0500
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
stable@...r.kernel.org
Cc: Benjamin Berg <benjamin.berg@...el.com>,
Johannes Berg <johannes.berg@...el.com>,
Miri Korenblit <miriam.rachel.korenblit@...el.com>,
Sasha Levin <sashal@...nel.org>,
johannes@...solutions.net,
davem@...emloft.net,
edumazet@...gle.com,
kuba@...nel.org,
pabeni@...hat.com,
linux-wireless@...r.kernel.org,
netdev@...r.kernel.org
Subject: [PATCH AUTOSEL 4.19 22/22] wifi: cfg80211: free beacon_ies when overridden from hidden BSS
From: Benjamin Berg <benjamin.berg@...el.com>
[ Upstream commit 32af9a9e1069e55bc02741fb00ac9d0ca1a2eaef ]
This is a more of a cosmetic fix. The branch will only be taken if
proberesp_ies is set, which implies that beacon_ies is not set unless we
are connected to an AP that just did a channel switch. And, in that case
we should have found the BSS in the internal storage to begin with.
Signed-off-by: Benjamin Berg <benjamin.berg@...el.com>
Reviewed-by: Johannes Berg <johannes.berg@...el.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@...el.com>
Link: https://msgid.link/20231220133549.b898e22dadff.Id8c4c10aedd176ef2e18a4cad747b299f150f9df@changeid
Signed-off-by: Johannes Berg <johannes.berg@...el.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
net/wireless/scan.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index d871349036a5..7f1a4ba975dd 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -1018,8 +1018,12 @@ cfg80211_bss_update(struct cfg80211_registered_device *rdev,
list_add(&new->hidden_list,
&hidden->hidden_list);
hidden->refcount++;
+
+ ies = (void *)rcu_dereference(new->pub.beacon_ies);
rcu_assign_pointer(new->pub.beacon_ies,
hidden->pub.beacon_ies);
+ if (ies)
+ kfree_rcu(ies, rcu_head);
}
} else {
/*
--
2.43.0
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