From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1792774874; b=TrNDvh3hovWu2lmJwqEtmUavWzEqJs1ma6qSpreHlv9h02QuB3XRFu9Z02stSqmQz7bJ 8p76pW+LEyupsA5OWgA72DkDY2QyS8kEARQBAHKliYFeFOMN8Q5Out7pprI/YDswEiiKP xDBS6ttBko1ZGC5Tem+z+vEreiOq04dqplPqXEBijvJzt++FOTbyF4l8AN3Na3FAz/NK2 uODEWjTsMy6WZ13wU4DayLo29cAzKaJFxRiV3BbovPeNaczVlo1+n7aT0zjoB+ZEwvZFQ 1pbMLxqs7NBMtCWHHB88cZTIdu0zC2cOIh2t1Q+T0yE7ZWwW6zHuAasVhrz9/e4pzbQ== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1792774874; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:User-Agent:X-stable:X-Patchwork-Hint: MIME-Version:Content-Transfer-Encoding; bh=n2XciUPIR6RUed+XaZ7rV/cRfYMv1+RcknlvdzS2O7E=; b=vjO6pf+1mSbgw8irh61yB8Tbkjm1OpSsOz9f1ovZ8CG8b5MEI8tu5WBK4b2Nal1TovYl nMdhzE6QWCKL3gDRY+rLKcLHvCKVpOPbvuKosrYe72nIUrznlnVxR17oKOB8OJkpsPg4f 6eetrdDBJaBmSZbdqjOO5gcZXshOqI3MAZW+86j6OhXSzzXeumnEqyINrS8XSnsUXpQYt PRFAagpYjJiuoPUiEn3kIvHXfwHLhjWA2oi00UEuraqAxfEg1/NL+7QZQ6EP0krqVqdqc CcdKW3TpRc2NR9zBVOk3OdsX+5UbpQpkcCSGe0kHBr15q9tviYy2ikGXgE/uIPA8KuA== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=BYHrWewv; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3E24C606A31E; Fri, 23 Oct 2026 17:01:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=BYHrWewv Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8E04E1F01825; Fri, 23 Oct 2026 17:01:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1792774874; bh=n2XciUPIR6RUed+XaZ7rV/cRfYMv1+RcknlvdzS2O7E=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=BYHrWewv8ClmKkJGUovs61DkPcSwpkg+RCKP5S8FY6OcES3HF3MaINZnITD+Pvrb6 gtVTnid4gRipMOC4yjq5SuYrmpO1gb/eEgF1WJL8C7vn06HBTuju8C0NZvj/Dl7iHY q/ZfWo2Ly8NwmGcZGAvwhVGIJCItMOvG/8OoPAvc= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, David Carlier , Steven Rostedt Subject: [PATCH 7.2 170/242] tracing: Take trace_types_lock when dropping the buffer_meta reference Date: Fri, 23 Oct 2026 18:40:12 +0200 Message-ID: <20261023163717.805847297@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261023163713.816071858@linuxfoundation.org> References: <20261023163713.816071858@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: patches@lists.linux.dev List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 7.2-stable review patch. If anyone has any objections, please let me know. ------------------ From: David Carlier commit 2afe7575fb24b9d0476ae4a3a9862f7997216aa4 upstream. tracing_buffer_meta_open() drops the trace_array reference with __trace_array_put() when ring_buffer_meta_seq_init() fails, without holding trace_types_lock. Use trace_array_put() like every other open error path. Cc: stable@vger.kernel.org Link: https://patch.msgid.link/20260914133506.4865-2-devnexen@gmail.com Fixes: 950032ffcee7 ("ring-buffer: Add output of ring buffer meta page") Signed-off-by: David Carlier Signed-off-by: Steven Rostedt Signed-off-by: Greg Kroah-Hartman --- kernel/trace/trace.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -5879,7 +5879,7 @@ static int tracing_buffer_meta_open(stru ret = ring_buffer_meta_seq_init(filp, tr->array_buffer.buffer, cpu); if (ret < 0) - __trace_array_put(tr); + trace_array_put(tr); return ret; }