linux-kernel - [PATCH] 9p/net/protocol.c: return -ENOMEM when kmalloc() failed

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Message-ID: <5B4552C5.60000@huawei.com>
Date:   Wed, 11 Jul 2018 08:43:49 +0800
From:   piaojun <piaojun@...wei.com>
To:     "akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
        <ericvh@...il.com>, <rminnich@...dia.gov>, <lucho@...kov.net>
CC:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        <v9fs-developer@...ts.sourceforge.net>,
        Jiangyiwen <jiangyiwen@...wei.com>
Subject: [PATCH] 9p/net/protocol.c: return -ENOMEM when kmalloc() failed

We should return -ENOMEM to upper user when kmalloc failed to indicate
accurate errno.

Signed-off-by: Jun Piao <piaojun@...wei.com>
---
 net/9p/protocol.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/9p/protocol.c b/net/9p/protocol.c
index 931ea00..4a1e1dd 100644
--- a/net/9p/protocol.c
+++ b/net/9p/protocol.c
@@ -156,7 +156,7 @@ static size_t pdu_write(struct p9_fcall *pdu, const void *data, size_t size)

 				*sptr = kmalloc(len + 1, GFP_NOFS);
 				if (*sptr == NULL) {
-					errcode = -EFAULT;
+					errcode = -ENOMEM;
 					break;
 				}
 				if (pdu_read(pdu, *sptr, len)) {
--