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=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 3CC6BC43613 for ; Fri, 21 Jun 2019 16:19:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0D1ED215EA for ; Fri, 21 Jun 2019 16:19:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1561133946; bh=1MgpH1r23u2tqpsRDhiOww76XSTOfo2+LJaAlGqRg44=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=UgS64ZL/MbDuTxo8hEKQWnj2MLtNYxwixS+5IB76ORZDmqWog34xr6dDE02uAlbmB KiO4Tti0wg32yU3/VW76M1SmAnf+qpDOcq6gmNh+1yJjA7uqdpp7KyFlVLYsIlJh2v CmbL1oc0r6qGjaIFP6pFkvV6rl3sfIkFFbCNDEGw= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726448AbfFUQTF (ORCPT ); Fri, 21 Jun 2019 12:19:05 -0400 Received: from mail.kernel.org ([198.145.29.99]:51778 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726032AbfFUQTE (ORCPT ); Fri, 21 Jun 2019 12:19:04 -0400 Received: from localhost.localdomain (NE2965lan1.rev.em-net.ne.jp [210.141.244.193]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id D32FA21530; Fri, 21 Jun 2019 16:19:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1561133943; bh=1MgpH1r23u2tqpsRDhiOww76XSTOfo2+LJaAlGqRg44=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=0jIaip59d0XEbC9lKt7bAvix2iQxBf1gTCWTGaCVnZ7AHw0XfPO9s/u5J6+L4u90C sZKd+kYirS9cDgmq9938+9e/gRAKuWqMLDE+MfWlJFTX4YYnVVfMChHp3igmOR1amw UsAdO5Qrn35dCCWS6gVOLgR4SJihQq5yvSdhw+lU= From: Masami Hiramatsu To: Steven Rostedt , Rob Herring , Frank Rowand , Tom Zanussi Cc: Ingo Molnar , Namhyung Kim , Jiri Olsa , Arnaldo Carvalho de Melo , linux-kernel@vger.kernel.org, devicetree@vger.kernel.org Subject: [RFC PATCH 06/11] tracing: Add NULL trace-array check in print_synth_event() Date: Sat, 22 Jun 2019 01:18:59 +0900 Message-Id: <156113393962.28344.13340382995505046307.stgit@devnote2> X-Mailer: git-send-email 2.20.1 In-Reply-To: <156113387975.28344.16009584175308192243.stgit@devnote2> References: <156113387975.28344.16009584175308192243.stgit@devnote2> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add NULL trace-array check in print_synth_event(), because if we enable tp_printk option, iter->tr can be NULL. Signed-off-by: Masami Hiramatsu --- kernel/trace/trace_events_hist.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c index a7f447195143..db973928e580 100644 --- a/kernel/trace/trace_events_hist.c +++ b/kernel/trace/trace_events_hist.c @@ -822,7 +822,7 @@ static enum print_line_t print_synth_event(struct trace_iterator *iter, fmt = synth_field_fmt(se->fields[i]->type); /* parameter types */ - if (tr->trace_flags & TRACE_ITER_VERBOSE) + if (tr && tr->trace_flags & TRACE_ITER_VERBOSE) trace_seq_printf(s, "%s ", fmt); snprintf(print_fmt, sizeof(print_fmt), "%%s=%s%%s", fmt);