netdev - [PATCH 2/2 net-next] ixgbe: remove xmit length check

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20120618115558.1ef26a48@nehalam.linuxnetplumber.net>
Date:	Mon, 18 Jun 2012 11:55:58 -0700
From:	Stephen Hemminger <shemminger@...tta.com>
To:	Bruce Allan <bruce.w.allan@...el.com>,
	Carolyn Wyborny <carolyn.wyborny@...el.com>,
	Don Skidmore <donald.c.skidmore@...el.com>,
	Greg Rose <gregory.v.rose@...el.com>,
	Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@...el.com>,
	Alex Duyck <alexander.h.duyck@...el.com>
Cc:	"David S. Miller" <davem@...emloft.net>,
	e1000-devel@...ts.sourceforge.net, netdev@...r.kernel.org
Subject: [PATCH 2/2 net-next] ixgbe: remove xmit length check

The check here is bogus. Since len is unsigned, it can never
be negative. And it would be a bug in network stack to ever
send a zero length packet to device.

Signed-off-by: Stephen Hemminger <shemminger@...tta.com>


--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c	2012-06-18 10:53:13.742310994 -0700
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c	2012-06-18 10:53:15.962279249 -0700
@@ -6380,11 +6380,6 @@ static netdev_tx_t ixgbe_xmit_frame(stru
 	struct ixgbe_adapter *adapter = netdev_priv(netdev);
 	struct ixgbe_ring *tx_ring;
 
-	if (skb->len <= 0) {
-		dev_kfree_skb_any(skb);
-		return NETDEV_TX_OK;
-	}
-
 	/*
 	 * The minimum packet size for olinfo paylen is 17 so pad the skb
 	 * in order to meet this minimum size requirement.
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html