From owner-freebsd-virtualization@freebsd.org Wed Feb 15 05:18:47 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 97B13CDFBEA for ; Wed, 15 Feb 2017 05:18:47 +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 86F391FC5 for ; Wed, 15 Feb 2017 05:18:47 +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 v1F5Ig8a064644 for ; Wed, 15 Feb 2017 05:18:47 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-virtualization@FreeBSD.org Subject: [Bug 211746] [Hyper-V] UEFI VM can't boot from the iso installation disk Date: Wed, 15 Feb 2017 05:18:42 +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: CURRENT X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: decui@microsoft.com 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: cc 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: Wed, 15 Feb 2017 05:18:47 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D211746 Dexuan Cui changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |kib@FreeBSD.org --- Comment #11 from Dexuan Cui --- (In reply to Dexuan Cui from comment #9) In efi_copy_finish(), I added the below new line=20 while (src < last) { + printf("trying to write: %lx(%p) to %lx(%p)\n", *src, src, *dst, dst); *dst++ =3D *src++; } and got the below log ... trying to write: 0(0xf653dfb0) to 0(0x2f72fb0) trying to write: 0(0xf653dfb8) to 0(0x2f72fb8) trying to write: 0(0xf653dfc0) to 0(0x2f72fc0) trying to write: 0(0xf653dfc8) to 0(0x2f72fc8) trying to write: 0(0xf653dfd0) to 0(0x2f72fd0) trying to write: 0(0xf653dfd8) to 0(0x2f72fd8) trying to write: 0(0xf653dfe0) to 0(0x2f72fe0) trying to write: 0(0xf653dfe8) to 0(0x2f72fe8) trying to write: 0(0xf653dff0) to 0(0x2f72ff0) trying to write: 0(0xf653dff8) to 0(0x2f72ff8) trying to write: 0(0xf653e000) to 2f74023(0x2f73000) This means the crash happened when dst=3D=3D0x2f73000, i.e. the first 8-byt= es of the BootServicesData. I suspect Hyper-V has a mechanism to mark the range of memory as read-only. --=20 You are receiving this mail because: You are the assignee for the bug.=