From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 52C591ED38 for ; Tue, 25 Jul 2023 11:10:42 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C9B53C433C7; Tue, 25 Jul 2023 11:10:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1690283442; bh=UOkvdbcB5rFaYzdNfibnsHEEx2hrm6PZ3PCYD4WqR2A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VY5EsiJX72tXb51SxQBqEFZTFl+rYz/OSBhH3wcUbNVpBqS2F14aR5/5SyIrrSAJo KACFwKm9u5eykT4fWYelQH2j4D9K5/usHA8rzZ0IGN5QwNYVUq14vJDMjl406Tn8cO LOTjk2DPHJEtkkmsPNWbQCK85jcSXZ0ViQg/7/OY= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Mohamed Khalfella , "Steven Rostedt (Google)" Subject: [PATCH 5.15 77/78] tracing/histograms: Return an error if we fail to add histogram to hist_vars list Date: Tue, 25 Jul 2023 12:47:08 +0200 Message-ID: <20230725104454.260696527@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230725104451.275227789@linuxfoundation.org> References: <20230725104451.275227789@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 @@ -5949,7 +5949,8 @@ 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; }