From: Trond Myklebust <Trond.Myklebust@netapp.com>
Date: Wed, 1 Aug 2012 18:21:12 +0000 (-0400)
Subject: NFSv4.1: decode_getdeviceinfo should check xdr_read_pages() return value
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=13fe4ba1b64c099843c75b4f0633ad30a4526637;p=linux-beck.git

NFSv4.1: decode_getdeviceinfo should check xdr_read_pages() return value

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
---

diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 8dba6bd48557..a756349b0fa4 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -5642,7 +5642,8 @@ static int decode_getdeviceinfo(struct xdr_stream *xdr,
 	 * and places the remaining xdr data in xdr_buf->tail
 	 */
 	pdev->mincount = be32_to_cpup(p);
-	xdr_read_pages(xdr, pdev->mincount); /* include space for the length */
+	if (xdr_read_pages(xdr, pdev->mincount) != pdev->mincount)
+		goto out_overflow;
 
 	/* Parse notification bitmap, verifying that it is zero. */
 	p = xdr_inline_decode(xdr, 4);