From: "John W. Linville" <linville@tuxdriver.com>
To: linux-wireless@vger.kernel.org
Cc: "John W. Linville" <linville@tuxdriver.com>
Subject: [PATCH] rtl8180: avoid potential NULL deref in rtl8180_beacon_work
Date: Thu, 5 Aug 2010 13:46:27 -0400 [thread overview]
Message-ID: <1281030387-5540-1-git-send-email-linville@tuxdriver.com> (raw)
ieee80211_beacon_get can return NULL...
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
drivers/net/wireless/rtl818x/rtl8180_dev.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/drivers/net/wireless/rtl818x/rtl8180_dev.c b/drivers/net/wireless/rtl818x/rtl8180_dev.c
index 1d81785..b50c39a 100644
--- a/drivers/net/wireless/rtl818x/rtl8180_dev.c
+++ b/drivers/net/wireless/rtl818x/rtl8180_dev.c
@@ -695,6 +695,8 @@ static void rtl8180_beacon_work(struct work_struct *work)
/* grab a fresh beacon */
skb = ieee80211_beacon_get(dev, vif);
+ if (!skb)
+ goto resched;
/*
* update beacon timestamp w/ TSF value
--
1.7.2
reply other threads:[~2010-08-05 18:14 UTC|newest]
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