From: valdis.kletnieks@vt.edu
To: gregkh@linuxfoundation.org, John Whitmore <arigead@gmail.com>,
Kees Cook <keescook@chromium.org>
Cc: kernelnewbies@kernelnewbies.org, linux-kernel@vger.kernel.org,
devel@driverdev.osuosl.org
Subject: [PATCH] fix error handling in drivers/staging/rtl8192u/ieee80211/ieee80211_module.c
Date: Wed, 26 Sep 2018 13:52:17 -0400 [thread overview]
Message-ID: <13450.1537984337@turing-police.cc.vt.edu> (raw)
John notes that if the kzalloc of ieee->pHTInfo fails, we fail to call
ieee80211_networks_free(). In addition, that function has an un-needed check
before kfree().
Reported-by: John Whitmore <arigead@gmail.com>
Signed-off-by: Valdis Kletnieks <valdis.kletnieks@vt.edu>
---
diff --git a/drivers/staging/rtl8192u/ieee80211/ieee80211_module.c b/drivers/staging/rtl8192u/ieee80211/ieee80211_module.c
index 90a097f2cd4e..97ff0371b5bb 100644
--- a/drivers/staging/rtl8192u/ieee80211/ieee80211_module.c
+++ b/drivers/staging/rtl8192u/ieee80211/ieee80211_module.c
@@ -78,8 +78,6 @@ static inline int ieee80211_networks_allocate(struct ieee80211_device *ieee)
static inline void ieee80211_networks_free(struct ieee80211_device *ieee)
{
- if (!ieee->networks)
- return;
kfree(ieee->networks);
ieee->networks = NULL;
}
@@ -180,6 +178,7 @@ struct net_device *alloc_ieee80211(int sizeof_priv)
return dev;
failed:
+ ieee80211_networks_free(ieee);
if (dev)
free_netdev(dev);
next reply other threads:[~2018-09-26 17:52 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-26 17:52 valdis.kletnieks [this message]
2018-09-26 18:04 ` Kees Cook
2018-09-27 14:24 ` Dan Carpenter
2018-09-27 15:43 ` Kees Cook
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