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 lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 773FAC5475B for ; Mon, 11 Mar 2024 03:29:12 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rjWI5-0005jR-PM; Sun, 10 Mar 2024 23:25:29 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rjWI0-0005g4-Sw; Sun, 10 Mar 2024 23:25:24 -0400 Received: from mgamail.intel.com ([198.175.65.10]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rjWHz-0007rZ-B3; Sun, 10 Mar 2024 23:25:24 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1710127523; x=1741663523; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=ixEs9dOFZnglqkPxeEdB/M9zEvYnvOWu4quv6IO1YXs=; b=YEyIpfvg1T1NDbRxM/IiMXoMXmyvv5LOs7hNgmBUx5ErrnmTL4EKq9PQ BXchLRmIWWtXGd3G2WxoEyncpmWwjIbuwhVxhmEiMWUvoJzHTW3+F2a+N NaMYDvhiP5WFEdXgppjeh2phxuKd7tR3OnJymKIZUHI9O+Dt5f75lY1fD vysa5zRUJL6hCgfLyujUnyLeeGwn8thp5MqwfxNeUOHE+ofRtGQ/prFZC ZZC/Sfqau5IzOuwYpzHyukrsgWb01nCxjWfYacftvxyEFe4tkTw0WtJKf M99U/h8GPvpHBW/O/xaArswcIPvLJKJuqDS7SrWNKWUCxtVuaNh1RUXjX g==; X-IronPort-AV: E=McAfee;i="6600,9927,11009"; a="22229667" X-IronPort-AV: E=Sophos;i="6.07,115,1708416000"; d="scan'208";a="22229667" Received: from fmviesa003.fm.intel.com ([10.60.135.143]) by orvoesa102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Mar 2024 20:25:19 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.07,115,1708416000"; d="scan'208";a="15593830" Received: from liuzhao-optiplex-7080.sh.intel.com ([10.239.160.36]) by fmviesa003.fm.intel.com with ESMTP; 10 Mar 2024 20:25:17 -0700 From: Zhao Liu To: Thomas Huth , Markus Armbruster , Michael Roth , Michael Tokarev , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , qemu-devel@nongnu.org Cc: qemu-trivial@nongnu.org, Zhao Liu , Fam Zheng , Kevin Wolf , Hanna Reitz , qemu-block@nongnu.org Subject: [PATCH v2 12/29] block/vmdk: Fix missing ERRP_GUARD() for error_prepend() Date: Mon, 11 Mar 2024 11:38:05 +0800 Message-Id: <20240311033822.3142585-13-zhao1.liu@linux.intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240311033822.3142585-1-zhao1.liu@linux.intel.com> References: <20240311033822.3142585-1-zhao1.liu@linux.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: none client-ip=198.175.65.10; envelope-from=zhao1.liu@linux.intel.com; helo=mgamail.intel.com X-Spam_score_int: -29 X-Spam_score: -3.0 X-Spam_bar: --- X-Spam_report: (-3.0 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.945, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Zhao Liu As the comment in qapi/error, passing @errp to error_prepend() requires ERRP_GUARD(): * = Why, when and how to use ERRP_GUARD() = * * Without ERRP_GUARD(), use of the @errp parameter is restricted: ... * - It should not be passed to error_prepend(), error_vprepend() or * error_append_hint(), because that doesn't work with &error_fatal. * ERRP_GUARD() lifts these restrictions. * * To use ERRP_GUARD(), add it right at the beginning of the function. * @errp can then be used without worrying about the argument being * NULL or &error_fatal. ERRP_GUARD() could avoid the case when @errp is &error_fatal, the user can't see this additional information, because exit() happens in error_setg earlier than information is added [1]. The vmdk_parse_extents() passes @errp to error_prepend(), and its @errp is from vmdk_open(). Though, vmdk_open(), as a BlockDriver.bdrv_open(), gets the @errp parameter which is pointer of its caller's local_err, to follow the requirement of @errp, add missing ERRP_GUARD() at the beginning of this function. [1]: Issue description in the commit message of commit ae7c80a7bd73 ("error: New macro ERRP_GUARD()"). Cc: Fam Zheng Cc: Kevin Wolf Cc: Hanna Reitz Cc: qemu-block@nongnu.org Signed-off-by: Zhao Liu --- block/vmdk.c | 1 + 1 file changed, 1 insertion(+) diff --git a/block/vmdk.c b/block/vmdk.c index bf78e1238351..3b82979fdf42 100644 --- a/block/vmdk.c +++ b/block/vmdk.c @@ -1147,6 +1147,7 @@ static int GRAPH_RDLOCK vmdk_parse_extents(const char *desc, BlockDriverState *bs, QDict *options, Error **errp) { + ERRP_GUARD(); int ret; int matches; char access[11]; -- 2.34.1