From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received-SPF: Pass (sender SPF authorized) identity=mailfrom; client-ip=134.134.136.31; helo=mga06.intel.com; envelope-from=hao.a.wu@intel.com; receiver=edk2-devel@lists.01.org Received: from mga06.intel.com (mga06.intel.com [134.134.136.31]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id 6193E208F6114 for ; Sun, 10 Feb 2019 23:58:02 -0800 (PST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by orsmga104.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 10 Feb 2019 23:58:02 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.58,358,1544515200"; d="scan'208";a="143214250" Received: from shwdeopenpsi014.ccr.corp.intel.com ([10.239.9.8]) by fmsmga004.fm.intel.com with ESMTP; 10 Feb 2019 23:58:01 -0800 From: Hao Wu To: edk2-devel@lists.01.org Cc: Hao Wu , Jian J Wang , Star Zeng Date: Mon, 11 Feb 2019 15:57:35 +0800 Message-Id: <20190211075738.16676-12-hao.a.wu@intel.com> X-Mailer: git-send-email 2.12.0.windows.1 In-Reply-To: <20190211075738.16676-1-hao.a.wu@intel.com> References: <20190211075738.16676-1-hao.a.wu@intel.com> Subject: [PATCH v4 10/13] MdeModulePkg/SmmLockBox(PEI): Remove an ASSERT in RestoreLockBox() X-BeenThere: edk2-devel@lists.01.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: EDK II Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 11 Feb 2019 07:58:02 -0000 This commit is out of the scope for BZ-1409. It is a refinement for the PEI library instance within SmmLockBoxLib. For the below ASSERT statement within function RestoreLockBox(): Status = SmmCommunicationPpi->Communicate ( SmmCommunicationPpi, &CommBuffer[0], &CommSize ); if (Status == EFI_NOT_STARTED) { // // Pei SMM communication not ready yet, so we access SMRAM directly // DEBUG ((DEBUG_INFO, "SmmLockBoxPeiLib Communicate - (%r)\n", Status)); Status = InternalRestoreLockBoxFromSmram (Guid, Buffer, Length); LockBoxParameterRestore->Header.ReturnStatus = (UINT64)Status; if (Length != NULL) { LockBoxParameterRestore->Length = (UINT64)*Length; } } ASSERT_EFI_ERROR (Status); It is possible for previous codes to return an error status that is possible for happen. One example is that, when the 'if' statement 'if (Status == EFI_NOT_STARTED) {' is entered, function InternalRestoreLockBoxFromSmram() is possible to return 'BUFFER_TOO_SMALL' if the caller of RestoreLockBox() provides a buffer that is too small to hold the content of LockBox. Thus, this commit will remove the ASSERT here. Please note that the current implementation of RestoreLockBox() is handling the above-mentioned error case properly, so no additional error handling codes are needed here. Cc: Jian J Wang Cc: Star Zeng Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Hao Wu Reviewed-by: Ray Ni Reviewed-by: Laszlo Ersek --- MdeModulePkg/Library/SmmLockBoxLib/SmmLockBoxPeiLib.c | 1 - 1 file changed, 1 deletion(-) diff --git a/MdeModulePkg/Library/SmmLockBoxLib/SmmLockBoxPeiLib.c b/MdeModulePkg/Library/SmmLockBoxLib/SmmLockBoxPeiLib.c index 9f73480070..8c3e65bc96 100644 --- a/MdeModulePkg/Library/SmmLockBoxLib/SmmLockBoxPeiLib.c +++ b/MdeModulePkg/Library/SmmLockBoxLib/SmmLockBoxPeiLib.c @@ -623,7 +623,6 @@ RestoreLockBox ( LockBoxParameterRestore->Length = (UINT64)*Length; } } - ASSERT_EFI_ERROR (Status); if (Length != NULL) { *Length = (UINTN)LockBoxParameterRestore->Length; -- 2.12.0.windows.1