linux-kernel - [PATCH AUTOSEL 6.5 38/45] Revert "wifi: mac80211_hwsim: check the return value of nla_put

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Message-Id: <20230908181327.3459042-38-sashal@kernel.org>
Date:   Fri,  8 Sep 2023 14:13:19 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Johannes Berg <johannes.berg@...el.com>,
        Sasha Levin <sashal@...nel.org>, johannes@...solutions.net,
        kvalo@...nel.org, linux-wireless@...r.kernel.org
Subject: [PATCH AUTOSEL 6.5 38/45] Revert "wifi: mac80211_hwsim: check the return value of nla_put_u32"

From: Johannes Berg <johannes.berg@...el.com>

[ Upstream commit 1b78dd34560e9962f8e917fe4adde6f2ab0eb89f ]

This reverts commit b970ac68e0c4 ("wifi: mac80211_hwsim: check the
return value of nla_put_u32") since it introduced a memory leak in
the error path, which seems worse than sending an incomplete skb,
and the put can't fail anyway since the SKB was just allocated.

Signed-off-by: Johannes Berg <johannes.berg@...el.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/wireless/virtual/mac80211_hwsim.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/net/wireless/virtual/mac80211_hwsim.c b/drivers/net/wireless/virtual/mac80211_hwsim.c
index dd516cec41973..23307c8baea21 100644
--- a/drivers/net/wireless/virtual/mac80211_hwsim.c
+++ b/drivers/net/wireless/virtual/mac80211_hwsim.c
@@ -582,9 +582,8 @@ static int mac80211_hwsim_vendor_cmd_test(struct wiphy *wiphy,
 		 */
 
 		/* Add vendor data */
-		err = nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 1);
-		if (err)
-			return err;
+		nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 1);
+
 		/* Send the event - this will call nla_nest_end() */
 		cfg80211_vendor_event(skb, GFP_KERNEL);
 	}
-- 
2.40.1