From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D6440C282E3 for ; Sun, 26 May 2019 19:19:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B59882171F for ; Sun, 26 May 2019 19:19:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727548AbfEZTTX (ORCPT ); Sun, 26 May 2019 15:19:23 -0400 Received: from mail.kernel.org ([198.145.29.99]:58930 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727167AbfEZTSt (ORCPT ); Sun, 26 May 2019 15:18:49 -0400 Received: from gandalf.local.home (cpe-66-24-58-225.stny.res.rr.com [66.24.58.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 14B2321783; Sun, 26 May 2019 19:18:49 +0000 (UTC) Received: from rostedt by gandalf.local.home with local (Exim 4.92) (envelope-from ) id 1hUyfQ-0004cV-7a; Sun, 26 May 2019 15:18:48 -0400 Message-Id: <20190526191848.121312660@goodmis.org> User-Agent: quilt/0.65 Date: Sun, 26 May 2019 15:18:39 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Ingo Molnar , Andrew Morton , kbuild test robot , Masami Hiramatsu Subject: [for-next][PATCH 11/16] tracing/kprobe: Cast user-space address correctly References: <20190526191828.466305460@goodmis.org> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Masami Hiramatsu Cast user-space address correctly to pass to probe_user_read(). Reported-by: kbuild test robot Signed-off-by: Masami Hiramatsu Signed-off-by: Steven Rostedt (VMware) --- kernel/trace/trace_kprobe.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c index ff14eb011c1c..2c5357dddb92 100644 --- a/kernel/trace/trace_kprobe.c +++ b/kernel/trace/trace_kprobe.c @@ -955,7 +955,9 @@ probe_mem_read(void *dest, void *src, size_t size) static nokprobe_inline int probe_mem_read_user(void *dest, void *src, size_t size) { - return probe_user_read(dest, src, size); + const void __user *uaddr = (__force const void __user *)src; + + return probe_user_read(dest, uaddr, size); } /* Note that we don't verify it, since the code does not come from user space */ -- 2.20.1