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=-2.4 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 35972C432C0 for ; Tue, 26 Nov 2019 22:14:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F03F32064B for ; Tue, 26 Nov 2019 22:14:02 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alien8.de header.i=@alien8.de header.b="cBD3raBL" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726437AbfKZWOC (ORCPT ); Tue, 26 Nov 2019 17:14:02 -0500 Received: from mail.skyhub.de ([5.9.137.197]:56598 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726072AbfKZWOB (ORCPT ); Tue, 26 Nov 2019 17:14:01 -0500 Received: from zn.tnic (p200300EC2F0EC2003034EE13CF148829.dip0.t-ipconnect.de [IPv6:2003:ec:2f0e:c200:3034:ee13:cf14:8829]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.skyhub.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id 7FBD11EC0CDC; Tue, 26 Nov 2019 23:14:00 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1574806440; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=bzV66XmqrkIBUMFTYjntXwun1FRqc6sMmxnkD45b3zs=; b=cBD3raBLhPtrbCdVKinqa08lUKDBbYtX+hMdoU3brhQpI/MGLfrKXuqJmNio082Ha7VkXp RmYPfZntZCdifHRawggyG/9Zz+BDH3tcgvRjo1Jsxv7kC+y/RU8D1RV7WY/ZQ8qpOeoh10 emBRZM5CZ05sx4FmFmKwcSJEKP3TPu4= Date: Tue, 26 Nov 2019 23:13:53 +0100 From: Borislav Petkov To: Barret Rhoden , austin@google.com Cc: Sebastian Andrzej Siewior , Rik van Riel , x86@kernel.org, linux-kernel@vger.kernel.org, Thomas Gleixner , Ingo Molnar Subject: Re: AVX register corruption from signal delivery Message-ID: <20191126221328.GH31379@zn.tnic> References: <20191126202026.csrmjre6vn2nxq7c@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Nov 26, 2019 at 04:23:40PM -0500, Barret Rhoden wrote: > Thanks; config attached. I've been able to recreate it in QEMU with at > least 2 cores. Yap, I can too, in my VM. Btw, would you guys like to submit that reproducer test program https://bugzilla.kernel.org/attachment.cgi?id=286073 into the kernel selftests pile here: tools/testing/selftests/x86/ ? It needs proper cleanup to fit kernel coding style but it could be a good start for collecting interesting FPU test cases... Thx. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette