From nobody@FreeBSD.org Thu Apr 27 19:27:55 2006 Return-Path: Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 1F7FA16A402 for ; Thu, 27 Apr 2006 19:27:55 +0000 (UTC) (envelope-from nobody@FreeBSD.org) Received: from www.freebsd.org (www.freebsd.org [216.136.204.117]) by mx1.FreeBSD.org (Postfix) with ESMTP id E299743D45 for ; Thu, 27 Apr 2006 19:27:54 +0000 (GMT) (envelope-from nobody@FreeBSD.org) Received: from www.freebsd.org (localhost [127.0.0.1]) by www.freebsd.org (8.13.1/8.13.1) with ESMTP id k3RJRseH023450 for ; Thu, 27 Apr 2006 19:27:54 GMT (envelope-from nobody@www.freebsd.org) Received: (from nobody@localhost) by www.freebsd.org (8.13.1/8.13.1/Submit) id k3RJRsGU023448; Thu, 27 Apr 2006 19:27:54 GMT (envelope-from nobody) Message-Id: <200604271927.k3RJRsGU023448@www.freebsd.org> Date: Thu, 27 Apr 2006 19:27:54 GMT From: Yuichiro Goto To: freebsd-gnats-submit@FreeBSD.org Subject: boot2 is unable to load kernel directly X-Send-Pr-Version: www-2.3 X-GNATS-Notify: bde,ru >Number: 96430 >Category: i386 >Synopsis: boot2 is unable to load kernel directly >Confidential: no >Severity: non-critical >Priority: medium >Responsible: ru >State: closed >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Thu Apr 27 19:30:12 GMT 2006 >Closed-Date: Mon Nov 27 14:50:14 GMT 2006 >Last-Modified: Mon Nov 27 15:00:23 GMT 2006 >Originator: Yuichiro Goto >Release: FreeBSD 6.1-RC1 >Organization: >Environment: FreeBSD cobalt.my.domain 6.1-RC FreeBSD 6.1-RC #0: Wed Apr 26 10:38:08 JST 2006 root@cobalt.my.domain:/usr/obj/usr/src/sys/GENERIC i386 >Description: Loading a kernel directly using boot2 causes the invalid-opcode fault like the following: int=00000006 err=00000000 efl=00010002 eip=c0445a90 eax=c0445a90 ebx=0007cd0f ecx=c0b5e1a7 edx=a030001e esi=c0b5e1a7 edi=c0445a90 ebp=00000002 esp=0009eb84 cs=0008 ds=0010 es=0010 fs=0010 gs=0010 ss=0010 cs:eip=ff ff ff ff ff ff ff ff-ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff-ff ff ff ff ff ff ff ff ss:esp=69 95 00 00 00 00 00 80-1e 00 30 a0 00 00 00 00 00 00 00 00 00 00 00 00-60 dd 00 00 36 42 00 00 BTX halted I tried to load a kernel directly that is a slightly modified version of GENERIC. The following 2 lines are added to GENERIC: makeoptions CONF_CFLAGS=-DROOTDEVNAME=\"ufs:/dev/ad0s2a\" makeoptions NO_MODULES=yes >How-To-Repeat: Directly load a kernel using boot2. >Fix: load() in src/sys/boot/i386/boot2/boot2.c tries to copy kernel segments at a phisical address on memory whose most significant 2 bits are set. This is because of changes between rev 1.70 and 1.71 of src/sys/boot/i386/boot2/boot2.c. >Release-Note: >Audit-Trail: From: Bruce Evans To: Yuichiro Goto Cc: freebsd-gnats-submit@freebsd.org, freebsd-i386@freebsd.org Subject: Re: i386/96430: boot2 is unable to load kernel directly Date: Sat, 29 Apr 2006 05:49:19 +1000 (EST) On Thu, 27 Apr 2006, Yuichiro Goto wrote: >> Description: > Loading a kernel directly using boot2 causes the invalid-opcode fault like the > following: > > int=00000006 err=00000000 efl=00010002 eip=c0445a90 > eax=c0445a90 ebx=0007cd0f ecx=c0b5e1a7 edx=a030001e > esi=c0b5e1a7 edi=c0445a90 ebp=00000002 esp=0009eb84 > cs=0008 ds=0010 es=0010 fs=0010 gs=0010 ss=0010 > cs:eip=ff ff ff ff ff ff ff ff-ff ff ff ff ff ff ff ff > ff ff ff ff ff ff ff ff-ff ff ff ff ff ff ff ff > ss:esp=69 95 00 00 00 00 00 80-1e 00 30 a0 00 00 00 00 > 00 00 00 00 00 00 00 00-60 dd 00 00 36 42 00 00 > BTX halted > > I tried to load a kernel directly that is a slightly modified > version of GENERIC. ... >> How-To-Repeat: > Directly load a kernel using boot2. >> Fix: > load() in src/sys/boot/i386/boot2/boot2.c tries to copy kernel segments at a > phisical address on memory whose most significant 2 bits are set. This is > because of changes between rev 1.70 and 1.71 of > src/sys/boot/i386/boot2/boot2.c. I reported this to the author of the bug a few months ago. I use an old 2-stage-only boot loader that is missing this bug, but still the GENERIC kernel doesn't load - the load hangs with no message. Loading of smaller kernels (size ~= 3MB) with boot2 still works with both my old boot loader and the FreeBSD-6.0 boot2 with rev.1.71 backed out. Bruce Responsible-Changed-From-To: freebsd-i386->jhb Responsible-Changed-By: ru Responsible-Changed-When: Thu Oct 26 12:17:14 UTC 2006 Responsible-Changed-Why: John, could you please look into fixing this properly? Backing out rev. 1.71 changes fixes this issue for me; see my email with more details. http://www.freebsd.org/cgi/query-pr.cgi?pr=96430 From: dfilter@FreeBSD.ORG (dfilter service) To: bug-followup@FreeBSD.org Cc: Subject: Re: i386/96430: commit references a PR Date: Thu, 26 Oct 2006 19:16:15 +0000 (UTC) ru 2006-10-26 19:15:54 UTC FreeBSD src repository Modified files: sys/boot/i386/boot2 boot2.c Log: Back out rev. 1.71 as it breaks directly loading (i386) kernels. OK'ed by: jhb PR: i386/96430, i386/104709 MFC after: 3 days Revision Changes Path 1.80 +3 -3 src/sys/boot/i386/boot2/boot2.c _______________________________________________ cvs-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/cvs-all To unsubscribe, send any mail to "cvs-all-unsubscribe@freebsd.org" State-Changed-From-To: open->patched State-Changed-By: ru State-Changed-When: Mon Oct 30 15:31:32 UTC 2006 State-Changed-Why: Fixed differently in 7.0-CURRENT. Responsible-Changed-From-To: jhb->ru Responsible-Changed-By: ru Responsible-Changed-When: Mon Oct 30 15:31:32 UTC 2006 Responsible-Changed-Why: http://www.freebsd.org/cgi/query-pr.cgi?pr=96430 State-Changed-From-To: patched->closed State-Changed-By: ru State-Changed-When: Mon Nov 27 14:49:56 UTC 2006 State-Changed-Why: Fixed in RELENG_6. http://www.freebsd.org/cgi/query-pr.cgi?pr=96430 From: dfilter@FreeBSD.ORG (dfilter service) To: bug-followup@FreeBSD.org Cc: Subject: Re: i386/96430: commit references a PR Date: Mon, 27 Nov 2006 14:50:47 +0000 (UTC) ru 2006-11-27 14:49:38 UTC FreeBSD src repository Modified files: (Branch: RELENG_6) sys/boot/i386/boot2 boot2.c Log: MFC: 1.80: Restore support for directly loaded kernels. 1.81: Restore support for -c and -d. PR: i386/96430, i386/104709 Revision Changes Path 1.72.2.5 +7 -5 src/sys/boot/i386/boot2/boot2.c _______________________________________________ cvs-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/cvs-all To unsubscribe, send any mail to "cvs-all-unsubscribe@freebsd.org" >Unformatted: