From nobody Sun Feb 8 09:10:34 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 33CA9C001DE for ; Sun, 23 Jul 2023 20:07:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229998AbjGWUHD (ORCPT ); Sun, 23 Jul 2023 16:07:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59082 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229775AbjGWUG4 (ORCPT ); Sun, 23 Jul 2023 16:06:56 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 24A3AE5B; Sun, 23 Jul 2023 13:06:56 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id AA7E460E9F; Sun, 23 Jul 2023 20:06:55 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1AE37C433CD; Sun, 23 Jul 2023 20:06:55 +0000 (UTC) Received: from rostedt by gandalf with local (Exim 4.96) (envelope-from ) id 1qNfLy-001c3I-0L; Sun, 23 Jul 2023 16:06:54 -0400 Message-ID: <20230723200653.918039652@goodmis.org> User-Agent: quilt/0.66 Date: Sun, 23 Jul 2023 16:06:26 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Masami Hiramatsu , Mark Rutland , Andrew Morton , stable@vger.kernel.org, Mohamed Khalfella Subject: [for-linus][PATCH 3/3] tracing/histograms: Return an error if we fail to add histogram to hist_vars list References: <20230723200623.034313147@goodmis.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Mohamed Khalfella Commit 6018b585e8c6 ("tracing/histograms: Add histograms to hist_vars if they have referenced variables") added a check to fail histogram creation if save_hist_vars() failed to add histogram to hist_vars list. But the commit failed to set ret to failed return code before jumping to unregister histogram, fix it. Link: https://lore.kernel.org/linux-trace-kernel/20230714203341.51396-1-mkh= alfella@purestorage.com Cc: stable@vger.kernel.org Fixes: 6018b585e8c6 ("tracing/histograms: Add histograms to hist_vars if th= ey have referenced variables") Signed-off-by: Mohamed Khalfella Signed-off-by: Steven Rostedt (Google) --- kernel/trace/trace_events_hist.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_h= ist.c index c8c61381eba4..d06938ae0717 100644 --- a/kernel/trace/trace_events_hist.c +++ b/kernel/trace/trace_events_hist.c @@ -6668,7 +6668,8 @@ static int event_hist_trigger_parse(struct event_comm= and *cmd_ops, goto out_unreg; =20 if (has_hist_vars(hist_data) || hist_data->n_var_refs) { - if (save_hist_vars(hist_data)) + ret =3D save_hist_vars(hist_data); + if (ret) goto out_unreg; } =20 --=20 2.40.1