netdev - [PATCH] rds: Fix rds message leak in rds_message_map

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Message-ID: <4CD82362.9070402@parallels.com>
Date:	Mon, 08 Nov 2010 19:20:50 +0300
From:	Pavel Emelyanov <xemul@...allels.com>
To:	Andy Grover <andy.grover@...cle.com>,
	David Miller <davem@...emloft.net>
CC:	rds-devel@....oracle.com,
	Linux Netdev List <netdev@...r.kernel.org>
Subject: [PATCH] rds: Fix rds message leak in rds_message_map_pages

The sgs allocation error path leaks the allocated message.

Signed-off-by: Pavel Emelyanov <xemul@...nvz.org>

---

diff --git a/net/rds/message.c b/net/rds/message.c
index 848cff4..1fd3d29 100644
--- a/net/rds/message.c
+++ b/net/rds/message.c
@@ -249,8 +249,10 @@ struct rds_message *rds_message_map_pages(unsigned long *page_addrs, unsigned in
 	rm->m_inc.i_hdr.h_len = cpu_to_be32(total_len);
 	rm->data.op_nents = ceil(total_len, PAGE_SIZE);
 	rm->data.op_sg = rds_message_alloc_sgs(rm, num_sgs);
-	if (!rm->data.op_sg)
+	if (!rm->data.op_sg) {
+		rds_message_put(rm);
 		return ERR_PTR(-ENOMEM);
+	}
 
 	for (i = 0; i < rm->data.op_nents; ++i) {
 		sg_set_page(&rm->data.op_sg[i],
--
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