linux-kernel - [PATCH 23/27] NFS: Fix memory leak

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Message-ID: <20080123004547.15602.89596.stgit@warthog.procyon.org.uk>
Date:	Wed, 23 Jan 2008 00:45:47 +0000
From:	David Howells <dhowells@...hat.com>
To:	Trond.Myklebust@...app.com
Cc:	nfsv4@...ux-nfs.org, linux-kernel@...r.kernel.org,
	linux-fsdevel@...r.kernel.org, selinux@...ho.nsa.gov,
	linux-security-module@...r.kernel.org, dhowells@...hat.com
Subject: [PATCH 23/27] NFS: Fix memory leak

Fix a memory leak whereby multiple clientaddr=xxx mount options just overwrite
the duplicated client_address option pointer, without freeing the old memory.

Signed-off-by: David Howells <dhowells@...hat.com>
---

 fs/nfs/super.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)


diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 0b0c72a..7f5e747 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -936,6 +936,7 @@ static int nfs_parse_mount_options(char *raw,
 			string = match_strdup(args);
 			if (string == NULL)
 				goto out_nomem;
+			kfree(mnt->client_address);
 			mnt->client_address = string;
 			break;
 		case Opt_mountaddr:

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