From owner-freebsd-bugs@freebsd.org Sun Jul 29 11:22:51 2018 Return-Path: Delivered-To: freebsd-bugs@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 691ED1053D80 for ; Sun, 29 Jul 2018 11:22:51 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.ysv.freebsd.org (mailman.ysv.freebsd.org [IPv6:2001:1900:2254:206a::50:5]) by mx1.freebsd.org (Postfix) with ESMTP id F327A7CAF9 for ; Sun, 29 Jul 2018 11:22:50 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.ysv.freebsd.org (Postfix) id B7D181053D7F; Sun, 29 Jul 2018 11:22:50 +0000 (UTC) Delivered-To: bugs@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 A67531053D7E for ; Sun, 29 Jul 2018 11:22:50 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.ysv.freebsd.org (mxrelay.ysv.freebsd.org [IPv6:2001:1900:2254:206a::19:3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mxrelay.ysv.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 430B87CAF8 for ; Sun, 29 Jul 2018 11:22:50 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.ysv.freebsd.org (Postfix) with ESMTPS id 9CCE714E31 for ; Sun, 29 Jul 2018 11:22:49 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id w6TBMnbm025063 for ; Sun, 29 Jul 2018 11:22:49 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id w6TBMn32025062 for bugs@FreeBSD.org; Sun, 29 Jul 2018 11:22:49 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 230144] Linux emulator does not work on Ryzen / Epic processors Date: Sun, 29 Jul 2018 11:22:49 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 11.2-STABLE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: pete@twisted.org.uk X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.27 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 29 Jul 2018 11:22:51 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D230144 Bug ID: 230144 Summary: Linux emulator does not work on Ryzen / Epic processors Product: Base System Version: 11.2-STABLE Hardware: amd64 OS: Any Status: New Severity: Affects Some People Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: pete@twisted.org.uk Trying to run any Linux binary on Ryzen or Epic coredumps. I trying to backtrace the core but the debugger does not seem to be able to get any information ut of the binary. This is completely AMD Zen specific - I can take the same disc and boot it = up with a Xeon processor and it works fine. I have also used the Linux emulato= r on older AMD processors fine (my desktop was a Phenom II until I upgraded it to the Ryzen) but I have to admit I haven't been able to try the latest kernel= on older AMD processors. Reproducing is trivial - enable Linux in rc.conf, install linux_base-c7 and= try and run /compat/linux/bin/bash. It will immediately coredump on a Zen machi= ne, but plugging the same disc into an Intel machine will run it fine. --=20 You are receiving this mail because: You are the assignee for the bug.=