linux-kernel - [079/116] SUNRPC: Fix a potential memory leak in auth

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Message-Id: <20100330225649.970174115@linux.site>
Date:	Tue, 30 Mar 2010 15:55:57 -0700
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Trond Myklebust <Trond.Myklebust@...app.com>,
	"J. Bruce Fields" <bfields@...i.umich.edu>,
	Greg Kroah-Hartman <gregkh@...e.de>
Subject: [079/116] SUNRPC: Fix a potential memory leak in auth_gss

2.6.32-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Trond Myklebust <Trond.Myklebust@...app.com>

commit cdead7cf12896c0e50a8be2e52de52c364603095 upstream.

The function alloc_enc_pages() currently fails to release the pointer
rqstp->rq_enc_pages in the error path.

Signed-off-by: Trond Myklebust <Trond.Myklebust@...app.com>
Acked-by: J. Bruce Fields <bfields@...i.umich.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 net/sunrpc/auth_gss/auth_gss.c |    5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

--- a/net/sunrpc/auth_gss/auth_gss.c
+++ b/net/sunrpc/auth_gss/auth_gss.c
@@ -1273,9 +1273,8 @@ alloc_enc_pages(struct rpc_rqst *rqstp)
 	rqstp->rq_release_snd_buf = priv_release_snd_buf;
 	return 0;
 out_free:
-	for (i--; i >= 0; i--) {
-		__free_page(rqstp->rq_enc_pages[i]);
-	}
+	rqstp->rq_enc_pages_num = i;
+	priv_release_snd_buf(rqstp);
 out:
 	return -EAGAIN;
 }


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