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From:   Sasha Levin <Alexander.Levin@microsoft.com>
To:     "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "stable@vger.kernel.org" <stable@vger.kernel.org>
CC:     Dan Carpenter <dan.carpenter@oracle.com>,
        Trond Myklebust <trond.myklebust@primarydata.com>,
        Sasha Levin <Alexander.Levin@microsoft.com>
Subject: [PATCH AUTOSEL for 4.4 071/167] pNFS/flexfiles: missing error code in
 ff_layout_alloc_lseg()
Thread-Topic: [PATCH AUTOSEL for 4.4 071/167] pNFS/flexfiles: missing error
 code in ff_layout_alloc_lseg()
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Date:   Mon, 19 Mar 2018 16:06:51 +0000
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From: Dan Carpenter <dan.carpenter@oracle.com>

[ Upstream commit 662f9a105b4322b8559d448f86110e6ec24b8738 ]

If xdr_inline_decode() fails then we end up returning ERR_PTR(0).  The
caller treats NULL returns as -ENOMEM so it doesn't really hurt runtime,
but obviously we intended to set an error code here.

Fixes: d67ae825a59d ("pnfs/flexfiles: Add the FlexFile Layout Driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
---
 fs/nfs/flexfilelayout/flexfilelayout.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c b/fs/nfs/flexfilelayout=
/flexfilelayout.c
index 54313322ee5b..c8e90152b61b 100644
--- a/fs/nfs/flexfilelayout/flexfilelayout.c
+++ b/fs/nfs/flexfilelayout/flexfilelayout.c
@@ -461,6 +461,7 @@ ff_layout_alloc_lseg(struct pnfs_layout_hdr *lh,
 			goto out_err_free;
=20
 		/* fh */
+		rc =3D -EIO;
 		p =3D xdr_inline_decode(&stream, 4);
 		if (!p)
 			goto out_err_free;
--=20
2.14.1