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 13883C04A95 for ; Sat, 22 Oct 2022 10:50:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229995AbiJVKu1 (ORCPT ); Sat, 22 Oct 2022 06:50:27 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59184 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229585AbiJVKuF (ORCPT ); Sat, 22 Oct 2022 06:50:05 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0039F10041D; Sat, 22 Oct 2022 03:07:00 -0700 (PDT) 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 DEE85B82DE2; Sat, 22 Oct 2022 07:42:38 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 56577C433D6; Sat, 22 Oct 2022 07:42:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1666424557; bh=njhw0LwRXIffYEP5C+Wa5eEtx0qNIV98IVTRB8jz/4A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=dIS7pPwbSIna8eki4KRjbhI5p4TrC8LX4ZKI4LIu5OmYHz1WlV6ltT8/vjiFIkDWQ GL4MoGGi6eDZTfAiKh4ovISDz/lmN8xIpdqvOLtRIoUabSE0ILqUr55D+YbYuJMXXg LoeHndGkFnJ1tb15hRqur9uAP60CaG/MMt2f1a6Q= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Rafael Mendonca , Sudeep Holla , "Rafael J. Wysocki" , Sasha Levin Subject: [PATCH 5.19 190/717] ACPI: PCC: Release resources on address space setup failure path Date: Sat, 22 Oct 2022 09:21:09 +0200 Message-Id: <20221022072449.227831824@linuxfoundation.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221022072415.034382448@linuxfoundation.org> References: <20221022072415.034382448@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: linux-kernel@vger.kernel.org From: Rafael Mendonca [ Upstream commit f890157e61b85ce8ae01a41ffa375e3b99853698 ] The allocated memory for the pcc_data struct doesn't get freed under an error path in pcc_mbox_request_channel() or acpi_os_ioremap(). Also, the PCC mailbox channel doesn't get freed under an error path in acpi_os_ioremap(). Fixes: 77e2a04745ff8 ("ACPI: PCC: Implement OperationRegion handler for the PCC Type 3 subtype") Signed-off-by: Rafael Mendonca Reviewed-by: Sudeep Holla Signed-off-by: Rafael J. Wysocki Signed-off-by: Sasha Levin --- drivers/acpi/acpi_pcc.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/acpi/acpi_pcc.c b/drivers/acpi/acpi_pcc.c index a12b55d81209..84f1ac416b57 100644 --- a/drivers/acpi/acpi_pcc.c +++ b/drivers/acpi/acpi_pcc.c @@ -63,6 +63,7 @@ acpi_pcc_address_space_setup(acpi_handle region_handle, u32 function, if (IS_ERR(data->pcc_chan)) { pr_err("Failed to find PCC channel for subspace %d\n", ctx->subspace_id); + kfree(data); return AE_NOT_FOUND; } @@ -72,6 +73,8 @@ acpi_pcc_address_space_setup(acpi_handle region_handle, u32 function, if (!data->pcc_comm_addr) { pr_err("Failed to ioremap PCC comm region mem for %d\n", ctx->subspace_id); + pcc_mbox_free_channel(data->pcc_chan); + kfree(data); return AE_NO_MEMORY; } -- 2.35.1