[PATCH] profile: fix uaccess handling

Signed-off-by: Heiko Carstens <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
fracktal · Dec 7, 2006 · 064b022 · 064b022
1 parent 7116e99
commit 064b022
Showing 1 changed file with 2 additions and 1 deletion.
diff --git 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);