netdev - [PATCH] wifi: cfg80211: Replace a label in cfg80211_parse_ml_sta

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Date: Sun, 31 Dec 2023 11:33:19 +0100
From: Markus Elfring <Markus.Elfring@....de>
To: linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
 kernel-janitors@...r.kernel.org, "David S. Miller" <davem@...emloft.net>,
 Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
 Johannes Berg <johannes@...solutions.net>, Paolo Abeni <pabeni@...hat.com>
Cc: LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH] wifi: cfg80211: Replace a label in
 cfg80211_parse_ml_sta_data()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Sun, 31 Dec 2023 11:22:42 +0100

The kfree() function was called in one case by
the cfg80211_parse_ml_sta_data() function during error handling
even if the passed variable contained a null pointer.
This issue was detected by using the Coccinelle software.

Thus use an other label.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 net/wireless/scan.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index cf2131671eb6..492e30138418 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -2693,7 +2693,7 @@ static void cfg80211_parse_ml_sta_data(struct wiphy *wiphy,

 	new_ie = kmalloc(IEEE80211_MAX_DATA_LEN, gfp);
 	if (!new_ie)
-		goto out;
+		goto free_mle;

 	for (i = 0; i < ARRAY_SIZE(mle->sta_prof) && mle->sta_prof[i]; i++) {
 		const struct ieee80211_neighbor_ap_info *ap_info;
@@ -2812,8 +2812,8 @@ static void cfg80211_parse_ml_sta_data(struct wiphy *wiphy,
 		cfg80211_put_bss(wiphy, bss);
 	}

-out:
 	kfree(new_ie);
+free_mle:
 	kfree(mle);
 }

--
2.43.0