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28 Feb 2024 08:24:06 -0800 Received: from liuzhao-optiplex-7080.sh.intel.com ([10.239.160.36]) by orviesa004.jf.intel.com with ESMTP; 28 Feb 2024 08:24:03 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1709137449; x=1740673449; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=nxRQf/+tArZDzcPHPsrl+p0ECgQSKCEQqDH1Za5Mhjg=; b=K+25loYKHaed5kwLQKiE3hXX0RQEjDPb/ajDzxS3bNmPr7uzFrsNiTU7 aPgAukCE9+wNTkgj5R3hHuQp5m7fVTFeatk6sb/u8ovEx9FxBpNfGJnVz M516RIMm02GnqMhTSP0rdu28ss3I1xX8iZ3rCdviLLShF1l0c5K+0XTiz NArwfcFrImDhMONihh5eVMi33WwECEy8uw0TwU2ClznQbIOQZ3D8Ayy5e ojWv8/cQAEGIz8Vrx9wADW/wdyV8Hece1IS7WeOF+V/QOjsV3yat7Vtwl NQL089jcOmw1lrJ0bHzzZE7Ey2py7g8LoMX0ttcphcpk+ckon4fa5uoTM Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10998"; a="28982478" X-IronPort-AV: E=Sophos;i="6.06,190,1705392000"; d="scan'208";a="28982478" X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.06,190,1705392000"; d="scan'208";a="12144933" From: Zhao Liu To: 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 , Stefan Hajnoczi , Fam Zheng , Kevin Wolf , Hanna Reitz Subject: [PATCH 06/16] block/nvme: Fix missing ERRP_GUARD() for error_prepend() Date: Thu, 29 Feb 2024 00:37:13 +0800 Message-Id: <20240228163723.1775791-7-zhao1.liu@linux.intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240228163723.1775791-1-zhao1.liu@linux.intel.com> References: <20240228163723.1775791-1-zhao1.liu@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: none client-ip=192.198.163.7; envelope-from=zhao1.liu@linux.intel.com; helo=mgamail.intel.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.102, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, 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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @intel.com) X-ZM-MESSAGEID: 1709137677080100001 From: Zhao Liu As the comment in qapi/error, passing @errp to error_prepend() requires ERRP_GUARD(): * =3D Why, when and how to use ERRP_GUARD() =3D * * 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 the pointer of error_fatal, the user can't see this additional information, because exit() happens in error_setg earlier than information is added [1]. In nvme.c, there're 3 functions passing @errp to error_prepend() without ERRP_GUARD(): - nvme_init_queue() - nvme_create_queue_pair() - nvme_identify() All these 3 functions take their @errp parameters from the nvme_file_open(), which is a BlockDriver.bdrv_nvme() method and its @errp points to its caller's local_err. Though these 3 cases haven't trigger the issue like [1] said, to follow the requirement of @errp, add missing ERRP_GUARD() at their beginning. [1]: Issue description in the commit message of commit ae7c80a7bd73 ("error: New macro ERRP_GUARD()"). Cc: Stefan Hajnoczi Cc: Fam Zheng Cc: "Philippe Mathieu-Daud=C3=A9" Cc: Kevin Wolf Cc: Hanna Reitz Signed-off-by: Zhao Liu Reviewed-by: Stefan Hajnoczi --- block/nvme.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/block/nvme.c b/block/nvme.c index 0a0a0a6b36cd..3a3c6da73d29 100644 --- a/block/nvme.c +++ b/block/nvme.c @@ -168,6 +168,7 @@ static QemuOptsList runtime_opts =3D { static bool nvme_init_queue(BDRVNVMeState *s, NVMeQueue *q, unsigned nentries, size_t entry_bytes, Error *= *errp) { + ERRP_GUARD(); size_t bytes; int r; =20 @@ -221,6 +222,7 @@ static NVMeQueuePair *nvme_create_queue_pair(BDRVNVMeSt= ate *s, unsigned idx, size_t size, Error **errp) { + ERRP_GUARD(); int i, r; NVMeQueuePair *q; uint64_t prp_list_iova; @@ -535,6 +537,7 @@ static int nvme_admin_cmd_sync(BlockDriverState *bs, Nv= meCmd *cmd) /* Returns true on success, false on failure. */ static bool nvme_identify(BlockDriverState *bs, int namespace, Error **err= p) { + ERRP_GUARD(); BDRVNVMeState *s =3D bs->opaque; bool ret =3D false; QEMU_AUTO_VFREE union { --=20 2.34.1