From: Stanislaw Gruszka <sgruszka@redhat.com>
To: "John W. Linville" <linville@tuxdriver.com>
Cc: Ivo van Doorn <IvDoorn@gmail.com>,
Gertjan van Wingerde <gwingerde@gmail.com>,
Helmut Schaa <helmut.schaa@googlemail.com>,
linux-wireless@vger.kernel.org
Subject: [PATCH] rt2x00: fix usage of NULL queue
Date: Tue, 2 Aug 2011 13:29:02 +0200 [thread overview]
Message-ID: <20110802112314.GA2688@redhat.com> (raw)
We may call rt2x00queue_pause_queue(queue) with queue == NULL. Bug
was introduced by commit 62fe778412b36791b7897cfa139342906fbbf07b
"rt2x00: Fix stuck queue in tx failure case" .
Cc: stable@kernel.org # 3.0+
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
---
drivers/net/wireless/rt2x00/rt2x00mac.c | 5 +++--
1 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/rt2x00/rt2x00mac.c b/drivers/net/wireless/rt2x00/rt2x00mac.c
index 8efab39..4ccf238 100644
--- a/drivers/net/wireless/rt2x00/rt2x00mac.c
+++ b/drivers/net/wireless/rt2x00/rt2x00mac.c
@@ -113,7 +113,7 @@ void rt2x00mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
* due to possible race conditions in mac80211.
*/
if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
- goto exit_fail;
+ goto exit_free_skb;
/*
* Use the ATIM queue if appropriate and present.
@@ -127,7 +127,7 @@ void rt2x00mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
ERROR(rt2x00dev,
"Attempt to send packet over invalid queue %d.\n"
"Please file bug report to %s.\n", qid, DRV_PROJECT);
- goto exit_fail;
+ goto exit_free_skb;
}
/*
@@ -159,6 +159,7 @@ void rt2x00mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
exit_fail:
rt2x00queue_pause_queue(queue);
+ exit_free_skb:
dev_kfree_skb_any(skb);
}
EXPORT_SYMBOL_GPL(rt2x00mac_tx);
--
1.7.1
next reply other threads:[~2011-08-02 11:28 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-02 11:29 Stanislaw Gruszka [this message]
2011-08-02 11:33 ` [PATCH] rt2x00: fix usage of NULL queue Ivo Van Doorn
2011-08-02 11:46 ` Gertjan van Wingerde
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