From 2b3097a294b6daaf390010de14ca50bfccbc6fb6 Mon Sep 17 00:00:00 2001
From: Peter Hurley <peter@hurleysoftware.com>
Date: Tue, 30 Apr 2013 19:14:42 -0700
Subject: [PATCH] ipc: set EFAULT as default error in load_msg()
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Acked-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
ipc/msgutil.c | 10 +++-------
1 file changed, 3 insertions(+), 7 deletions(-)
diff --git a/ipc/msgutil.c b/ipc/msgutil.c
index b79582d461a4..d33fbb2743bd 100644
--- a/ipc/msgutil.c
+++ b/ipc/msgutil.c
@@ -84,7 +84,7 @@ struct msg_msg *load_msg(const void __user *src, int len)
{
struct msg_msg *msg;
struct msg_msgseg *seg;
- int err;
+ int err = -EFAULT;
int alen;
msg = alloc_msg(len);
@@ -92,19 +92,15 @@ struct msg_msg *load_msg(const void __user *src, int len)
return ERR_PTR(-ENOMEM);
alen = min(len, DATALEN_MSG);
- if (copy_from_user(msg + 1, src, alen)) {
- err = -EFAULT;
+ if (copy_from_user(msg + 1, src, alen))
goto out_err;
- }
for (seg = msg->next; seg != NULL; seg = seg->next) {
len -= alen;
src = (char __user *)src + alen;
alen = min(len, DATALEN_SEG);
- if (copy_from_user(seg + 1, src, alen)) {
- err = -EFAULT;
+ if (copy_from_user(seg + 1, src, alen))
goto out_err;
- }
}
err = security_msg_msg_alloc(msg);
--
2.20.1