From patchwork Thu Jan 2 22:08:03 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 11316135 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id F4222138D for ; Thu, 2 Jan 2020 22:43:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D1A3922B48 for ; Thu, 2 Jan 2020 22:43:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578005039; bh=fW9Gz4rN4vuGWaB4xKKJYFcn8j7Hz++IV5tpiplwfIU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=dzb3VYzhn12Xl2Nu4r4CFiPtmydHXhvJVRfqJFS3i2QzpxVldBd7VpKFgjCe+w5ey I3NwXzLeuZ0JqBDCDg5KUtVMCtFxNyQgCYefseSvE75IyKXWusp6PVc8iWV8ZG3H4x n930K9YrtnVpMNXt/KRmZY1CD2srfFa3sd0Wjj2s= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730195AbgABWeC (ORCPT ); Thu, 2 Jan 2020 17:34:02 -0500 Received: from mail.kernel.org ([198.145.29.99]:42010 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730434AbgABWeB (ORCPT ); Thu, 2 Jan 2020 17:34:01 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 3011E20863; Thu, 2 Jan 2020 22:34:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578004440; bh=fW9Gz4rN4vuGWaB4xKKJYFcn8j7Hz++IV5tpiplwfIU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LNgvP6wwQjaNJ+4hf1vh+qrGgSLn2THms5pT8RDhNrj09GTwvX8m+n0H6anxfHw/7 7EbajV4egoaFNz2nJd5XSww4ndDt7mrpwdOMkPUNp/F9COb01gQG+f9u0TDTELItjJ Gx5666Y+SJ89O1hcctf/0VAyDvJy1eg0StBA4Qt0= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, " =?utf-8?q?Jan_H_=2E__Sch=C3=B6nherr?= " , Borislav Petkov , Tony Luck , "H. Peter Anvin" , Ingo Molnar , linux-edac , Thomas Gleixner , x86-ml , Yazen Ghannam , Sasha Levin Subject: [PATCH 4.9 152/171] x86/mce: Fix possibly incorrect severity calculation on AMD Date: Thu, 2 Jan 2020 23:08:03 +0100 Message-Id: <20200102220607.986637001@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220546.960200039@linuxfoundation.org> References: <20200102220546.960200039@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: linux-edac-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-edac@vger.kernel.org From: Jan H. Schönherr [ Upstream commit a3a57ddad061acc90bef39635caf2b2330ce8f21 ] The function mce_severity_amd_smca() requires m->bank to be initialized for correct operation. Fix the one case, where mce_severity() is called without doing so. Fixes: 6bda529ec42e ("x86/mce: Grade uncorrected errors for SMCA-enabled systems") Fixes: d28af26faa0b ("x86/MCE: Initialize mce.bank in the case of a fatal error in mce_no_way_out()") Signed-off-by: Jan H. Schönherr Signed-off-by: Borislav Petkov Reviewed-by: Tony Luck Cc: "H. Peter Anvin" Cc: Ingo Molnar Cc: linux-edac Cc: Cc: Thomas Gleixner Cc: x86-ml Cc: Yazen Ghannam Link: https://lkml.kernel.org/r/20191210000733.17979-4-jschoenh@amazon.de Signed-off-by: Sasha Levin --- arch/x86/kernel/cpu/mcheck/mce.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c index d3b2c5b25c9c..07188a012492 100644 --- a/arch/x86/kernel/cpu/mcheck/mce.c +++ b/arch/x86/kernel/cpu/mcheck/mce.c @@ -782,8 +782,8 @@ static int mce_no_way_out(struct mce *m, char **msg, unsigned long *validp, if (quirk_no_way_out) quirk_no_way_out(i, m, regs); + m->bank = i; if (mce_severity(m, mca_cfg.tolerant, &tmp, true) >= MCE_PANIC_SEVERITY) { - m->bank = i; mce_read_aux(m, i); *msg = tmp; return 1;