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 X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D6212C3A5A6 for ; Sun, 22 Sep 2019 19:12:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AD7A9214D9 for ; Sun, 22 Sep 2019 19:12:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569179541; bh=CdKsb+0RI3iUs2816+NlYyidIgr7wQBF4+TCgmP++QE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Lq+8j93LCjdRlfXPwGcwCoI5EqOL8bujf1Sqp5IYVQXQ+Knws8acU/+oVgllMc92e sRZlV/wCDMUUW2PZr0KJzLSVE3RcaAl3i8XDpueKN5FYsas6Hqsl+MFvzZE7FddeFy ezJPahisKlQqBJ4MGVWogYDDKWuYVjuQEpCuQ+f0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2406241AbfIVTMU (ORCPT ); Sun, 22 Sep 2019 15:12:20 -0400 Received: from mail.kernel.org ([198.145.29.99]:60734 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2438724AbfIVS6F (ORCPT ); Sun, 22 Sep 2019 14:58:05 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 872E821A4A; Sun, 22 Sep 2019 18:58:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569178684; bh=CdKsb+0RI3iUs2816+NlYyidIgr7wQBF4+TCgmP++QE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=15Fji5Q92HRv+I2xznWZSVmtDUgW1QGOhZXNLtpj/ddlGFJUK/ItojtMQtowL+blC 9Hwr9cfn6cUcFt4mEXGHmBeUXwWc14Zx6z9mu77e3Kxh0YUe1dxgQZJGaRk99C+Y1q t+xG0ywU9MQTzfjTpNPo71L/6jrr0s2nF63P0W0M= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Xiaofei Tan , James Morse , Ard Biesheuvel , Sasha Levin , linux-efi@vger.kernel.org Subject: [PATCH AUTOSEL 4.14 30/89] efi: cper: print AER info of PCIe fatal error Date: Sun, 22 Sep 2019 14:56:18 -0400 Message-Id: <20190922185717.3412-30-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190922185717.3412-1-sashal@kernel.org> References: <20190922185717.3412-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Xiaofei Tan [ Upstream commit b194a77fcc4001dc40aecdd15d249648e8a436d1 ] AER info of PCIe fatal error is not printed in the current driver. Because APEI driver will panic directly for fatal error, and can't run to the place of printing AER info. An example log is as following: {763}[Hardware Error]: Hardware error from APEI Generic Hardware Error Source: 11 {763}[Hardware Error]: event severity: fatal {763}[Hardware Error]: Error 0, type: fatal {763}[Hardware Error]: section_type: PCIe error {763}[Hardware Error]: port_type: 0, PCIe end point {763}[Hardware Error]: version: 4.0 {763}[Hardware Error]: command: 0x0000, status: 0x0010 {763}[Hardware Error]: device_id: 0000:82:00.0 {763}[Hardware Error]: slot: 0 {763}[Hardware Error]: secondary_bus: 0x00 {763}[Hardware Error]: vendor_id: 0x8086, device_id: 0x10fb {763}[Hardware Error]: class_code: 000002 Kernel panic - not syncing: Fatal hardware error! This issue was imported by the patch, '37448adfc7ce ("aerdrv: Move cper_print_aer() call out of interrupt context")'. To fix this issue, this patch adds print of AER info in cper_print_pcie() for fatal error. Here is the example log after this patch applied: {24}[Hardware Error]: Hardware error from APEI Generic Hardware Error Source: 10 {24}[Hardware Error]: event severity: fatal {24}[Hardware Error]: Error 0, type: fatal {24}[Hardware Error]: section_type: PCIe error {24}[Hardware Error]: port_type: 0, PCIe end point {24}[Hardware Error]: version: 4.0 {24}[Hardware Error]: command: 0x0546, status: 0x4010 {24}[Hardware Error]: device_id: 0000:01:00.0 {24}[Hardware Error]: slot: 0 {24}[Hardware Error]: secondary_bus: 0x00 {24}[Hardware Error]: vendor_id: 0x15b3, device_id: 0x1019 {24}[Hardware Error]: class_code: 000002 {24}[Hardware Error]: aer_uncor_status: 0x00040000, aer_uncor_mask: 0x00000000 {24}[Hardware Error]: aer_uncor_severity: 0x00062010 {24}[Hardware Error]: TLP Header: 000000c0 01010000 00000001 00000000 Kernel panic - not syncing: Fatal hardware error! Fixes: 37448adfc7ce ("aerdrv: Move cper_print_aer() call out of interrupt context") Signed-off-by: Xiaofei Tan Reviewed-by: James Morse [ardb: put parens around terms of && operator] Signed-off-by: Ard Biesheuvel Signed-off-by: Sasha Levin --- drivers/firmware/efi/cper.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/firmware/efi/cper.c b/drivers/firmware/efi/cper.c index ce23d5402bd66..db404aab82b2a 100644 --- a/drivers/firmware/efi/cper.c +++ b/drivers/firmware/efi/cper.c @@ -507,6 +507,21 @@ static void cper_print_pcie(const char *pfx, const struct cper_sec_pcie *pcie, printk( "%s""bridge: secondary_status: 0x%04x, control: 0x%04x\n", pfx, pcie->bridge.secondary_status, pcie->bridge.control); + + /* Fatal errors call __ghes_panic() before AER handler prints this */ + if ((pcie->validation_bits & CPER_PCIE_VALID_AER_INFO) && + (gdata->error_severity & CPER_SEV_FATAL)) { + struct aer_capability_regs *aer; + + aer = (struct aer_capability_regs *)pcie->aer_info; + printk("%saer_uncor_status: 0x%08x, aer_uncor_mask: 0x%08x\n", + pfx, aer->uncor_status, aer->uncor_mask); + printk("%saer_uncor_severity: 0x%08x\n", + pfx, aer->uncor_severity); + printk("%sTLP Header: %08x %08x %08x %08x\n", pfx, + aer->header_log.dw0, aer->header_log.dw1, + aer->header_log.dw2, aer->header_log.dw3); + } } static void cper_print_tstamp(const char *pfx, -- 2.20.1