linux-kernel - Re: drivers/net/wireless/libertas/rx.c: use-after-free

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Message-Id: <200707021050.33039.hs4233@mail.mn-solutions.de>
Date:	Mon, 2 Jul 2007 10:50:32 +0200
From:	Holger Schurig <hs4233@...l.mn-solutions.de>
To:	linux-wireless@...r.kernel.org
Cc:	Dan Williams <dcbw@...hat.com>, Adrian Bunk <bunk@...sta.de>,
	linville@...driver.com, linux-kernel@...r.kernel.org,
	libertas-dev@...ts.infradead.org
Subject: Re: drivers/net/wireless/libertas/rx.c: use-after-free

libertas: remove a coverity bug

... by removing an ill-conceived, useless line.

Signed-off-by: Holger Schurig <hs4233@...l.mn-solutions.de>

---

Dunno how this line made it into the patch that I made in
February and was commited in May. At that time, I didn't hardly
knew anything about skb's at all and certainly didn't play with
raw ethernet types. Maybe it was a remnant of some bugus test
that I or the committer did?!?

I tested the driver after the removal of this line with ping and
ssh, but not anything else (e.g. no mesh, no tshark monitoring).

 drivers/net/wireless/libertas/rx.c |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)

diff --git a/drivers/net/wireless/libertas/rx.c b/drivers/net/wireless/libertas/rx.c
index 88d9d2d..769c86f 100644
--- a/drivers/net/wireless/libertas/rx.c
+++ b/drivers/net/wireless/libertas/rx.c
@@ -439,7 +439,6 @@ static int process_rxed_802_11_packet(wlan_private * priv, struct sk_buff *skb)
 	ret = 0;
 
 done:
-	skb->protocol = __constant_htons(0x0019);	/* ETH_P_80211_RAW */
 	lbs_deb_leave_args(LBS_DEB_RX, "ret %d", ret);
 	return ret;
 }
-
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