From owner-freebsd-virtualization@freebsd.org Thu Mar 30 22:32:37 2017 Return-Path: Delivered-To: freebsd-virtualization@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id E6693D26224 for ; Thu, 30 Mar 2017 22:32:37 +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 mx1.freebsd.org (Postfix) with ESMTPS id D0652A39 for ; Thu, 30 Mar 2017 22:32:37 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from bugs.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id v2UMWbBR071124 for ; Thu, 30 Mar 2017 22:32:37 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-virtualization@FreeBSD.org Subject: [Bug 215972] Bhyve crash more then 1 cpu AMD Date: Thu, 30 Mar 2017 22:32:37 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 11.0-STABLE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Many People X-Bugzilla-Who: grehan@FreeBSD.org X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: freebsd-virtualization@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: 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-virtualization@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Discussion of various virtualization techniques FreeBSD supports." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 30 Mar 2017 22:32:38 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D215972 --- Comment #9 from Peter Grehan --- Insta-repro for me on a Ryzen 1700. Happens almost immediately on install w= ith >=3D 2 vCPUs, and the more configured, the faster the freeze. Single vCPU i= nstall is reliable, and I've been able to get occasional long uptimes with server sku's and 2 vCPUs. I also see cases where it's only some vCPUs that are stuck at 100% - someti= mes 2, with the remainder idle. The RIPs of the spinning vCPUs are generally constant, indicating a lock-spin or similar. To debug further with Windows, it probably needs the Windows kernel debugge= r to be hooked up, and then trapped into once the spin is seen. However, I can repro this doing a FreeBSD buildworld with >=3D 12 vCPUs. It= takes a lot longer (~20 mins) but seems to be reliable. Backtraces in ddb seem to show a missed IPI while holding a spinlock, which eventually blocks the ent= ire system. --=20 You are receiving this mail because: You are the assignee for the bug.=