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 33A1EC677F1 for ; Mon, 16 Jan 2023 17:14:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234360AbjAPROy (ORCPT ); Mon, 16 Jan 2023 12:14:54 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38992 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234375AbjAPRNM (ORCPT ); Mon, 16 Jan 2023 12:13:12 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 62B814B75B for ; Mon, 16 Jan 2023 08:53:52 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 0CE66B810A0 for ; Mon, 16 Jan 2023 16:53:51 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6243FC433D2; Mon, 16 Jan 2023 16:53:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1673888029; bh=0BBmgqfI7EDb2WCbwr/A2pVWRsOTTcj8+obVy0CS7EY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=CzWADgOWndkmKgxo57bSy1W7T+1FAZLz9Z6N/x0HvYj9ShKfb/SfNtWcz/45adx/n OzTPXddVW6G6PZF7ohOb2W+fuBngec83urAegOHSMzcZKa439AcR6P1+LDz+Q5xM8y VKsASb4PZxtfQLXuVfOhmUDXX9FCmXOs8j/UOG7k= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Hanjun Guo , Jarkko Sakkinen Subject: [PATCH 4.19 374/521] tpm: tpm_tis: Add the missed acpi_put_table() to fix memory leak Date: Mon, 16 Jan 2023 16:50:36 +0100 Message-Id: <20230116154903.828900166@linuxfoundation.org> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230116154847.246743274@linuxfoundation.org> References: <20230116154847.246743274@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: Hanjun Guo commit db9622f762104459ff87ecdf885cc42c18053fd9 upstream. In check_acpi_tpm2(), we get the TPM2 table just to make sure the table is there, not used after the init, so the acpi_put_table() should be added to release the ACPI memory. Fixes: 4cb586a188d4 ("tpm_tis: Consolidate the platform and acpi probe flow") Cc: stable@vger.kernel.org Signed-off-by: Hanjun Guo Signed-off-by: Jarkko Sakkinen Signed-off-by: Greg Kroah-Hartman --- drivers/char/tpm/tpm_tis.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) --- a/drivers/char/tpm/tpm_tis.c +++ b/drivers/char/tpm/tpm_tis.c @@ -129,6 +129,7 @@ static int check_acpi_tpm2(struct device const struct acpi_device_id *aid = acpi_match_device(tpm_acpi_tbl, dev); struct acpi_table_tpm2 *tbl; acpi_status st; + int ret = 0; if (!aid || aid->driver_data != DEVICE_IS_TPM2) return 0; @@ -136,8 +137,7 @@ static int check_acpi_tpm2(struct device /* If the ACPI TPM2 signature is matched then a global ACPI_SIG_TPM2 * table is mandatory */ - st = - acpi_get_table(ACPI_SIG_TPM2, 1, (struct acpi_table_header **)&tbl); + st = acpi_get_table(ACPI_SIG_TPM2, 1, (struct acpi_table_header **)&tbl); if (ACPI_FAILURE(st) || tbl->header.length < sizeof(*tbl)) { dev_err(dev, FW_BUG "failed to get TPM2 ACPI table\n"); return -EINVAL; @@ -145,9 +145,10 @@ static int check_acpi_tpm2(struct device /* The tpm2_crb driver handles this device */ if (tbl->start_method != ACPI_TPM2_MEMORY_MAPPED) - return -ENODEV; + ret = -ENODEV; - return 0; + acpi_put_table((struct acpi_table_header *)tbl); + return ret; } #else static int check_acpi_tpm2(struct device *dev)