From patchwork Mon Jan 6 21:19:02 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Steven Rostedt X-Patchwork-Id: 234434 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=-6.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS autolearn=unavailable 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 3DE1DC33C8C for ; Mon, 6 Jan 2020 21:20:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1377E2146E for ; Mon, 6 Jan 2020 21:20:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726913AbgAFVT7 (ORCPT ); Mon, 6 Jan 2020 16:19:59 -0500 Received: from mail.kernel.org ([198.145.29.99]:56272 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726731AbgAFVT7 (ORCPT ); Mon, 6 Jan 2020 16:19:59 -0500 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 BC6B82081E; Mon, 6 Jan 2020 21:19:58 +0000 (UTC) Received: from rostedt by gandalf.local.home with local (Exim 4.92.3) (envelope-from ) id 1ioZn3-000MV1-Si; Mon, 06 Jan 2020 16:19:57 -0500 Message-Id: <20200106211957.757088760@goodmis.org> User-Agent: quilt/0.65 Date: Mon, 06 Jan 2020 16:19:02 -0500 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Ingo Molnar , Andrew Morton , stable@vger.kernel.org, kbuild test robot Subject: [for-linus][PATCH 1/7] tracing: Initialize val to zero in parse_entry of inject code References: <20200106211901.293910946@goodmis.org> MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: "Steven Rostedt (VMware)" gcc produces a variable may be uninitialized warning for "val" in parse_entry(). This is really a false positive, but the code is subtle enough to just initialize val to zero and it's not a fast path to worry about it. Marked for stable to remove the warning in the stable trees as well. Cc: stable@vger.kernel.org Fixes: 6c3edaf9fd6a3 ("tracing: Introduce trace event injection") Reported-by: kbuild test robot Signed-off-by: Steven Rostedt (VMware) --- kernel/trace/trace_events_inject.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/trace/trace_events_inject.c b/kernel/trace/trace_events_inject.c index d45079ee62f8..22bcf7c51d1e 100644 --- a/kernel/trace/trace_events_inject.c +++ b/kernel/trace/trace_events_inject.c @@ -195,7 +195,7 @@ static int parse_entry(char *str, struct trace_event_call *call, void **pentry) unsigned long irq_flags; void *entry = NULL; int entry_size; - u64 val; + u64 val = 0; int len; entry = trace_alloc_entry(call, &entry_size);