linux-kernel - [patch 4/5] profile: fix uaccess handling

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Message-ID: <20061026130402.GE7127@osiris.boeblingen.de.ibm.com>
Date:	Thu, 26 Oct 2006 15:04:02 +0200
From:	Heiko Carstens <heiko.carstens@...ibm.com>
To:	Andrew Morton <akpm@...l.org>, linux-kernel@...r.kernel.org
Subject: [patch 4/5] profile: fix uaccess handling

Signed-off-by: Heiko Carstens <heiko.carstens@...ibm.com>
---
 kernel/profile.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletion(-)

Index: linux-2.6/kernel/profile.c
===================================================================
--- linux-2.6.orig/kernel/profile.c	2006-10-26 14:40:57.000000000 +0200
+++ linux-2.6/kernel/profile.c	2006-10-26 14:42:07.000000000 +0200
@@ -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);
-
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