From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Thu, 7 Dec 2006 04:36:37 +0000 (-0800)
Subject: [PATCH] profile: fix uaccess handling
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=064b022c7adb2d853378078a9dc141f8288d1c73;p=openwrt%2Fstaging%2Fblogic.git

[PATCH] profile: fix uaccess handling

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/kernel/profile.c b/kernel/profile.c
index f940b462eec9..15b012df4ff1 100644
--- a/kernel/profile.c
+++ b/kernel/profile.c
@@ -442,7 +442,8 @@ read_profile(struct file *file, char __user *buf, size_t count, loff_t *ppos)
 	read = 0;
 
 	while (p < sizeof(unsigned int) && count > 0) {
-		put_user(*((char *)(&sample_step)+p),buf);
+		if (put_user(*((char *)(&sample_step)+p),buf))
+			return -EFAULT;
 		buf++; p++; count--; read++;
 	}
 	pnt = (char *)prof_buffer + p - sizeof(atomic_t);