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From: Ian Campbell <ian.campbell@citrix.com>
To: <netdev@vger.kernel.org>
Cc: <xen-devel@lists.xen.org>, Ian Campbell <ian.campbell@citrix.com>
Subject: [PATCH 4/4] netback: correct netbk_tx_err to handle wrap around.
Date: Wed, 6 Feb 2013 17:18:18 +0000	[thread overview]
Message-ID: <1360171098-1240-4-git-send-email-ian.campbell@citrix.com> (raw)
In-Reply-To: <1360171081.32479.20.camel@zakaz.uk.xensource.com>

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Jan Beulich <JBeulich@suse.com>
---
 drivers/net/xen-netback/netback.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c
index 1a99288..28d5e06 100644
--- a/drivers/net/xen-netback/netback.c
+++ b/drivers/net/xen-netback/netback.c
@@ -880,7 +880,7 @@ static void netbk_tx_err(struct xenvif *vif,
 
 	do {
 		make_tx_response(vif, txp, XEN_NETIF_RSP_ERROR);
-		if (cons >= end)
+		if (cons == end)
 			break;
 		txp = RING_GET_REQUEST(&vif->tx, cons++);
 	} while (1);
-- 
1.7.2.5

      parent reply	other threads:[~2013-02-06 17:18 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-02-06 17:18 [PATCH 0/4] XSA-39 CVE-2013-021[67]: Linux netback DoS via malicious guest ring Ian Campbell
2013-02-06 17:18 ` [PATCH 1/4] xen/netback: shutdown the ring if it contains garbage Ian Campbell
2013-02-06 17:18 ` Ian Campbell
2013-02-06 17:18 ` [PATCH 2/4] xen/netback: don't leak pages on failure in xen_netbk_tx_check_gop Ian Campbell
2013-02-06 17:18 ` Ian Campbell
2013-02-06 17:18 ` [PATCH 3/4] xen/netback: free already allocated memory on failure in xen_netbk_get_requests Ian Campbell
2013-02-06 17:31   ` Ben Pfaff
2013-02-06 17:31   ` Ben Pfaff
2013-02-06 18:47     ` David Miller
2013-02-06 18:47     ` David Miller
2013-02-07  9:40       ` Ian Campbell
2013-02-07  9:40       ` Ian Campbell
2013-02-06 17:18 ` Ian Campbell
2013-02-06 17:18 ` [PATCH 4/4] netback: correct netbk_tx_err to handle wrap around Ian Campbell
2013-02-06 17:18 ` Ian Campbell [this message]

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