From 50a212ec906f7524620675f0c57357691c26c81f Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 16 Oct 2024 01:20:19 +0000
Subject: [PATCH] 修改GPIO导出默认初始值

---
 kernel/drivers/net/wireless/mac80211_hwsim.c |    7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/kernel/drivers/net/wireless/mac80211_hwsim.c b/kernel/drivers/net/wireless/mac80211_hwsim.c
index 3da8ff7..552253d 100644
--- a/kernel/drivers/net/wireless/mac80211_hwsim.c
+++ b/kernel/drivers/net/wireless/mac80211_hwsim.c
@@ -3625,12 +3625,13 @@
 	frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
 	frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
 
+	if (frame_data_len < sizeof(struct ieee80211_hdr_3addr) ||
+	    frame_data_len > IEEE80211_MAX_DATA_LEN)
+		goto err;
+
 	/* Allocate new skb here */
 	skb = alloc_skb(frame_data_len, GFP_KERNEL);
 	if (skb == NULL)
-		goto err;
-
-	if (frame_data_len > IEEE80211_MAX_DATA_LEN)
 		goto err;
 
 	/* Copy the data */

--
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