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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4E5EAC0015E for ; Tue, 25 Jul 2023 11:49:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233537AbjGYLtv (ORCPT ); Tue, 25 Jul 2023 07:49:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56782 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232915AbjGYLth (ORCPT ); Tue, 25 Jul 2023 07:49:37 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E64FE2100 for ; Tue, 25 Jul 2023 04:49:23 -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 E7F53616B8 for ; Tue, 25 Jul 2023 11:49:22 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 010F4C433C7; Tue, 25 Jul 2023 11:49:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1690285762; bh=muaiRA8EAOUTZfNMbKhI9NoscaLHjh51MDIEvfz0emA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ffbjShFI64l3B1DvGzgR4fIBLZeaE0W1hGQNUVxs/xJLl1w+2P4ogPOErjY9v0xXx nFsPIgrkrHS4TNC2nCD5c3EJ3n31FZ5cvzFOiFcZcX+T9LS8JN7X4Br8AievhySYwz SAeOKnLB8UWUxCQ+ZOFz6gX/UTf2NkhH4XE0jrIs= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Mohamed Khalfella , "Steven Rostedt (Google)" Subject: [PATCH 5.4 313/313] tracing/histograms: Return an error if we fail to add histogram to hist_vars list Date: Tue, 25 Jul 2023 12:47:46 +0200 Message-ID: <20230725104534.676992797@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230725104521.167250627@linuxfoundation.org> References: <20230725104521.167250627@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Mohamed Khalfella commit 4b8b3905165ef98386a3c06f196c85d21292d029 upstream. 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-mkhalfella@purestorage.com Cc: stable@vger.kernel.org Fixes: 6018b585e8c6 ("tracing/histograms: Add histograms to hist_vars if they have referenced variables") Signed-off-by: Mohamed Khalfella Signed-off-by: Steven Rostedt (Google) Signed-off-by: Greg Kroah-Hartman --- kernel/trace/trace_events_hist.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/kernel/trace/trace_events_hist.c +++ b/kernel/trace/trace_events_hist.c @@ -6428,7 +6428,8 @@ static int event_hist_trigger_func(struc goto out_unreg; if (has_hist_vars(hist_data) || hist_data->n_var_refs) { - if (save_hist_vars(hist_data)) + ret = save_hist_vars(hist_data); + if (ret) goto out_unreg; }