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=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 50138C433E6 for ; Wed, 23 Dec 2020 02:44:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 23E7522573 for ; Wed, 23 Dec 2020 02:44:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729836AbgLWCW5 (ORCPT ); Tue, 22 Dec 2020 21:22:57 -0500 Received: from mail.kernel.org ([198.145.29.99]:52102 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727883AbgLWCWy (ORCPT ); Tue, 22 Dec 2020 21:22:54 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 4D4FA23340; Wed, 23 Dec 2020 02:22:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1608690133; bh=jy51iq8t1S2+P1FuN/O4BSiNfHKgD0DwphlEPREaxBo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=o43szrpZ15/qr1AaF2Eokroo6BOwytBFBt1EKYt/ePa0JyjqwE/wo9HIuPyqs0zrB NxR3nhRO8DygjYb+sz3noGQ5Y7ATXOH+83mAzuwFv40BH6SQJQFFafE54pMH5G/iOK GxnII9cYarK3PypwdXkMjfnUysDXnBAAzeo/UrHWe4VUMrzAWzrPfhiENEgcCVp5pg Uh5qquukdTnDkYtIFmuIuRYTX/CMa+ZEGyFr70ksaAn5wCU7x4ot/wCQLUZnsDyviI Z3Q0P0FmXHUQaedDXej6SMI/4ZcAl3r6njJ3sMjv7FVCvQvCNGVJAZIp9xplOyAV3e h68fty/R+npJg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Gabriele Paoloni , Borislav Petkov , Tony Luck , Sasha Levin Subject: [PATCH AUTOSEL 4.19 56/87] x86/mce: Panic for LMCE only if mca_cfg.tolerant < 3 Date: Tue, 22 Dec 2020 21:20:32 -0500 Message-Id: <20201223022103.2792705-56-sashal@kernel.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20201223022103.2792705-1-sashal@kernel.org> References: <20201223022103.2792705-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Gabriele Paoloni [ Upstream commit 3a866b16fd2360a9c4ebf71cfbf7ebfe968c1409 ] Right now for LMCE, if no_way_out is set, mce_panic() is called regardless of mca_cfg.tolerant. This is not correct as, if mca_cfg.tolerant = 3, the code should never panic. Add that check. [ bp: use local ptr 'cfg'. ] Signed-off-by: Gabriele Paoloni Signed-off-by: Borislav Petkov Reviewed-by: Tony Luck Link: https://lkml.kernel.org/r/20201127161819.3106432-4-gabriele.paoloni@intel.com 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 2a13468f87739..c0f71b731d4b3 100644 --- a/arch/x86/kernel/cpu/mcheck/mce.c +++ b/arch/x86/kernel/cpu/mcheck/mce.c @@ -1294,7 +1294,7 @@ void do_machine_check(struct pt_regs *regs, long error_code) * to see it will clear it. */ if (lmce) { - if (no_way_out) + if (no_way_out && cfg->tolerant < 3) mce_panic("Fatal local machine check", &m, msg); } else { order = mce_start(&no_way_out); -- 2.27.0