linux-kernel - [PATCH 28/57] staging: rtl8192u: ieee80211_softmac: Move a large data struct onto the heap

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Date:   Wed, 14 Apr 2021 19:11:00 +0100
From:   Lee Jones <lee.jones@...aro.org>
To:     lee.jones@...aro.org
Cc:     linux-kernel@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Romain Perier <romain.perier@...il.com>,
        Allen Pais <apais@...ux.microsoft.com>,
        Andrea Merello <andrea.merello@...il.com>,
        linux-staging@...ts.linux.dev
Subject: [PATCH 28/57] staging: rtl8192u: ieee80211_softmac: Move a large data struct onto the heap

Fixes the following W=1 kernel build warning(s):

 drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c: In function ‘ieee80211_rx_frame_softmac’:
 drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c:2009:1: warning: the frame size of 1152 bytes is larger than 1024 bytes [-Wframe-larger-than=]

Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Romain Perier <romain.perier@...il.com>
Cc: Allen Pais <apais@...ux.microsoft.com>
Cc: Andrea Merello <andrea.merello@...il.com>
Cc: linux-staging@...ts.linux.dev
Signed-off-by: Lee Jones <lee.jones@...aro.org>
---
 drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c b/drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c
index 690b664df8fae..73f63d4510e77 100644
--- a/drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c
+++ b/drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c
@@ -1911,8 +1911,11 @@ ieee80211_rx_frame_softmac(struct ieee80211_device *ieee, struct sk_buff *skb,
 		if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) &&
 		    ieee->state == IEEE80211_ASSOCIATING_AUTHENTICATED &&
 		    ieee->iw_mode == IW_MODE_INFRA) {
-			struct ieee80211_network network_resp;
-			struct ieee80211_network *network = &network_resp;
+			struct ieee80211_network *network;
+
+			network = kzalloc(sizeof(*network), GFP_KERNEL);
+			if (!network)
+				return -ENOMEM;
 
 			errcode = assoc_parse(ieee, skb, &aid);
 			if (!errcode) {
@@ -1923,7 +1926,6 @@ ieee80211_rx_frame_softmac(struct ieee80211_device *ieee, struct sk_buff *skb,
 				/* Let the register setting defaultly with Legacy station */
 				if (ieee->qos_support) {
 					assoc_resp = (struct ieee80211_assoc_response_frame *)skb->data;
-					memset(network, 0, sizeof(*network));
 					if (ieee80211_parse_info_param(ieee, assoc_resp->info_element,\
 								       rx_stats->len - sizeof(*assoc_resp), \
 								       network, rx_stats)) {
@@ -1949,6 +1951,7 @@ ieee80211_rx_frame_softmac(struct ieee80211_device *ieee, struct sk_buff *skb,
 				else
 					ieee80211_associate_abort(ieee);
 			}
+			kfree(network);
 		}
 		break;
 
-- 
2.27.0