From owner-freebsd-stable@freebsd.org Wed Jan 24 16:29:21 2018 Return-Path: Delivered-To: freebsd-stable@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 29F91EDB978 for ; Wed, 24 Jan 2018 16:29:21 +0000 (UTC) (envelope-from haramrae@gmail.com) Received: from mail-ua0-x233.google.com (mail-ua0-x233.google.com [IPv6:2607:f8b0:400c:c08::233]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id BC64E8FE93 for ; Wed, 24 Jan 2018 16:29:20 +0000 (UTC) (envelope-from haramrae@gmail.com) Received: by mail-ua0-x233.google.com with SMTP id t6so3070181ual.7 for ; Wed, 24 Jan 2018 08:29:20 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=R29oP+AGNj2Xzj1IDRrwBRbHLwcw55xTKo6sU0DPIW0=; b=juD9fm4HvQOGIKq3r+ht3ib8TDeTgUINB+Kdtvmc7eCt0D7n5j702uXwT9nYLPmzRv Q1gwvPi7jKA6wQymFNA+d7lRr7/LdcLFXsHAh+TDYgTWTcwaupd5qeQPkXT+vxviwuR0 1ri7P1RO+r5YaVqra4aW4dDbzCfSRMvLaBHnVoWz1Fsf/xMHK/uZSFsqjgSjpDM7cwV+ nTQebVBJBX+NHk+XCxNIIKphvvIswdBp+DBun+Z4bWjQ2/eqq9EOfs87HNqIhDS3juLa vuB8lipPLam6MvzSmB7BJZUf4r1KWxklgGqanAjqo2L9ZYKQ3qK4BoLFn7/i5MD0u7yE Ji3g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=R29oP+AGNj2Xzj1IDRrwBRbHLwcw55xTKo6sU0DPIW0=; b=FIc7nRVjdDBWg0gmn+BA1jUQoTBjWRB9CHY+epyY7SiT9At6S9Z/0TEiaprV5aqMO2 mGcokc12shxwuzRbuDgMmw9azho3LZTumehaCLifXpCYwOfW/GNkCLPR+rhhutMvbjv6 v1IS0MH6EYOUayXp160pErJf+ZIwfdpN5XR8B7XPL1fv4Eq49Kj4pN5qiPFuQdQFgSsq p8V0+n9wkLBCxxA2yc7POmd6fxqwQAyihLN0d+4R8qibeli0320UMuxlVeCHxacpwcDk L+LJqaHsRG6gykyVwNtMNDBe4ZDotF6zhoDhwERfjkQCCrghkUDtCvZQh3jFAYRQA0K3 qxSA== X-Gm-Message-State: AKwxytdmAIHlZP3bRBPSe+yla2qlFSlo6wBjbDhX3pu8gfMY+f3K2ZSA Jdo0E6P7/xQdybE63gjq7cK+ysXnFt5hzT9j0Sg= X-Google-Smtp-Source: AH8x227Qmg6YAfhXdUAf0PQwDnTPGGHAH0owA+X8vckmWHZMXNzxk5gzrib87dWsI883Ntl/Oimv1mpTL3aCmhqSaS0= X-Received: by 10.176.19.16 with SMTP id g16mr5040676uae.11.1516811360190; Wed, 24 Jan 2018 08:29:20 -0800 (PST) MIME-Version: 1.0 Received: by 10.176.89.236 with HTTP; Wed, 24 Jan 2018 08:29:19 -0800 (PST) In-Reply-To: <744bbe18-80c4-d057-c88d-fbe480ee9abb@sentex.net> References: <744bbe18-80c4-d057-c88d-fbe480ee9abb@sentex.net> From: Alban Hertroys Date: Wed, 24 Jan 2018 17:29:19 +0100 Message-ID: Subject: Re: Ryzen issues on FreeBSD ? (summary of 4 issues) To: Mike Tancsa Cc: Mark Millard , nimrodl@gmail.com, michaelp@bsquare.com, FreeBSD-STABLE Mailing List Content-Type: text/plain; charset="UTF-8" X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 24 Jan 2018 16:29:21 -0000 On 24 January 2018 at 15:42, Mike Tancsa wrote: > b) CPUs manufactured prior to week 25 (some say week 33?) have a > hardware defect that manifests itself as segfaults in heavy compiles. I > was able to confirm this on 1 of the CPUs I had using a Linux setup. It > seems to confirm this, you need to physically look at the CPU for the > manufacturing date :( Not sure how to trigger it on FreeBSD reliably, > but there is a github project I used to verify on Linux > (https://github.com/suaefar/ryzen-test) According to post #39 in the referenced Linux thread (https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1690085): "It was officially fixed for all ryzen manufactured after week 30." I currently have a Ryzen 1600X from week 17/30, which suggests it will have the bug. Unfortunately, I don't have it built into a system yet as I'm waiting for DDR4 prices to become reasonable again before ordering any, so I can't test it. I'm not sure how solid this info is, should I RMA it without even having tested that it has a problem? Alban Hertroys -- If you can't see the forest for the trees, Cut the trees and you'll see there is no forest.