From: Kinglong Mee <kinglongmee@gmail.com>
Date: Tue, 2 Sep 2014 14:13:32 +0000 (+0800)
Subject: NFSD: Fix bad using of return value from qword_get
X-Git-Tag: v3.18-rc1~124^2~24
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=48c348b09c6b35b1cf6f2125d1d4fd7c962dd79d;p=linux.git

NFSD: Fix bad using of return value from qword_get

Signed-off-by: Kinglong Mee <kinglongmee@gmail.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
---

diff --git a/fs/nfsd/nfs4idmap.c b/fs/nfsd/nfs4idmap.c
index a0ab0a847d69..dc948f667650 100644
--- a/fs/nfsd/nfs4idmap.c
+++ b/fs/nfsd/nfs4idmap.c
@@ -368,7 +368,7 @@ nametoid_parse(struct cache_detail *cd, char *buf, int buflen)
 {
 	struct ent ent, *res;
 	char *buf1;
-	int error = -EINVAL;
+	int len, error = -EINVAL;
 
 	if (buf[buflen - 1] != '\n')
 		return (-EINVAL);
@@ -392,8 +392,8 @@ nametoid_parse(struct cache_detail *cd, char *buf, int buflen)
 		IDMAP_TYPE_USER : IDMAP_TYPE_GROUP;
 
 	/* Name */
-	error = qword_get(&buf, buf1, PAGE_SIZE);
-	if (error <= 0 || error >= IDMAP_NAMESZ)
+	len = qword_get(&buf, buf1, PAGE_SIZE);
+	if (len <= 0 || len >= IDMAP_NAMESZ)
 		goto out;
 	memcpy(ent.name, buf1, sizeof(ent.name));