From 13fe4ba1b64c099843c75b4f0633ad30a4526637 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Wed, 1 Aug 2012 14:21:12 -0400 Subject: [PATCH] NFSv4.1: decode_getdeviceinfo should check xdr_read_pages() return value Signed-off-by: Trond Myklebust --- fs/nfs/nfs4xdr.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) 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); -- 2.39.5