commit 064b022c7adb2d853378078a9dc141f8288d1c73
author Heiko Carstens <heiko.carstens@de.ibm.com> Wed Dec 06 20:36:37 2006 -0800
committer Linus Torvalds <torvalds@woody.osdl.org> Thu Dec 07 08:39:33 2006 -0800
tree 67a8a2a05c0acd5eeee569317cf3cd87ff66cabb
parent 7116e994b47f3988389be4ceee67dac64b56e0d0

[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>

kernel/profile.c

diff --git a/kernel/profile.c b/kernel/profile.c
index f940b46..15b012df 100644
--- a/kernel/profile.c
+++ b/kernel/profile.c
@@ -442,7 +442,8 @@
 	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);