From: Li Zefan <lizf@cn.fujitsu.com>
Date: Thu, 11 Mar 2010 22:08:10 +0000 (-0800)
Subject: sunrpc/cache: fix module refcnt leak in a failure path
X-Git-Tag: v2.6.34.9~7
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=eef557db3e67f4897c21423d4f2d41392458aa9c;p=karo-tx-linux.git

sunrpc/cache: fix module refcnt leak in a failure path

commit a5990ea1254cd186b38744507aeec3136a0c1c95 upstream

Don't forget to release the module refcnt if seq_open() returns failure.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Cc: J. Bruce Fields <bfields@fieldses.org>
Cc: Neil Brown <neilb@suse.de>
Cc: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
---

diff --git a/net/sunrpc/cache.c b/net/sunrpc/cache.c
index 39bddba53ba1..b7af6b27dde6 100644
--- a/net/sunrpc/cache.c
+++ b/net/sunrpc/cache.c
@@ -1233,8 +1233,10 @@ static int content_open(struct inode *inode, struct file *file,
 	if (!cd || !try_module_get(cd->owner))
 		return -EACCES;
 	han = __seq_open_private(file, &cache_content_op, sizeof(*han));
-	if (han == NULL)
+	if (han == NULL) {
+		module_put(cd->owner);
 		return -ENOMEM;
+	}
 
 	han->cd = cd;
 	return 0;