From owner-freebsd-bugs@FreeBSD.ORG Sat Aug 30 13:10:02 2008 Return-Path: Delivered-To: freebsd-bugs@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id B953C1065676 for ; Sat, 30 Aug 2008 13:10:02 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id 93CDF8FC08 for ; Sat, 30 Aug 2008 13:10:02 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (gnats@localhost [127.0.0.1]) by freefall.freebsd.org (8.14.2/8.14.2) with ESMTP id m7UDA2Z6033490 for ; Sat, 30 Aug 2008 13:10:02 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.2/8.14.1/Submit) id m7UDA22c033489; Sat, 30 Aug 2008 13:10:02 GMT (envelope-from gnats) Resent-Date: Sat, 30 Aug 2008 13:10:02 GMT Resent-Message-Id: <200808301310.m7UDA22c033489@freefall.freebsd.org> Resent-From: FreeBSD-gnats-submit@FreeBSD.org (GNATS Filer) Resent-To: freebsd-bugs@FreeBSD.org Resent-Reply-To: FreeBSD-gnats-submit@FreeBSD.org, David Naylor Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 6B3581065677 for ; Sat, 30 Aug 2008 13:04:54 +0000 (UTC) (envelope-from nobody@FreeBSD.org) Received: from www.freebsd.org (www.freebsd.org [IPv6:2001:4f8:fff6::21]) by mx1.freebsd.org (Postfix) with ESMTP id 57E2F8FC0A for ; Sat, 30 Aug 2008 13:04:54 +0000 (UTC) (envelope-from nobody@FreeBSD.org) Received: from www.freebsd.org (localhost [127.0.0.1]) by www.freebsd.org (8.14.2/8.14.2) with ESMTP id m7UD4s33028487 for ; Sat, 30 Aug 2008 13:04:54 GMT (envelope-from nobody@www.freebsd.org) Received: (from nobody@localhost) by www.freebsd.org (8.14.2/8.14.1/Submit) id m7UD4scP028486; Sat, 30 Aug 2008 13:04:54 GMT (envelope-from nobody) Message-Id: <200808301304.m7UD4scP028486@www.freebsd.org> Date: Sat, 30 Aug 2008 13:04:54 GMT From: David Naylor To: freebsd-gnats-submit@FreeBSD.org X-Send-Pr-Version: www-3.1 Cc: Subject: misc/126972: kernel fails to load with a big mfs image X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 30 Aug 2008 13:10:02 -0000 >Number: 126972 >Category: misc >Synopsis: kernel fails to load with a big mfs image >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Sat Aug 30 13:10:02 UTC 2008 >Closed-Date: >Last-Modified: >Originator: David Naylor >Release: 8-Current >Organization: Private >Environment: FreeBSD dragonmini.dg 8.0-CURRENT FreeBSD 8.0-CURRENT #0: Tue Aug 26 20:30:23 SAST 2008 root@dragonmini.dg:/tmp/usr/src/sys/GENERIC i386 >Description: The kernel fails to boot when loading a big mfs image at boot time. This problem does not appear on amd64. Changing vm.kmem_size and vm.kmem_size_max to 512MiB does not help. Although in this case the mfs image is compressed I do not think it changes anything. >How-To-Repeat: Create a big file and load it on boot... Add the following to loader.conf: dragonroot_load="YES" dragonroot_type="mfs_root" dragonroot_name="/boot/dragonroot" where /boot/dragonroot is a big file... (please see attached for the output [via serial] and the backtrace) >Fix: Patch attached with submission follows: OK ls -l boot/ boot/ d 512 zfs d 512 firmware d 512 kernel d 512 modules d 512 defaults 8192 boot 512 boot1 7680 boot2 1201 cdboot 7551 gptboot 249856 loader 15219 loader.help 7545 loader.4th 36462 support.4th 692 screen.4th 2249 frames.4th 7636 beastie.4th 385 loader.rc 251904 pxeboot 1776 device.hints 406 loader.conf 512 mbr 512 pmbr 512 boot0 512 boot0sio 95251544 dragonroot.gz OK show vm.kmem_size 512M OK show vm.kmem_size_max 512M OK boot /boot/kernel/acpi.ko text=0x521cc data=0x2640+0x182c syms=[0x4+0x8b80+0x4+0xbe19] GDB: no debug ports present KDB: debugger backends: ddb KDB: current backend: ddb 1048576K of memory above 4GB ignored Copyright (c) 1992-2008 The FreeBSD Project. Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994 The Regents of the University of California. All rights reserved. FreeBSD is a registered trademark of The FreeBSD Foundation. FreeBSD 8.0-CURRENT #0: Wed Aug 27 23:13:13 SAST 2008 root@dragonmini.dg:/tmp/usr/src/sys/GENERIC WARNING: WITNESS option enabled, expect reduced performance. Fatal trap 12: page fault while in kernel mode cpuid = 0; apic id = 00 fault virtual address = 0xbff1e000 fault code = supervisor write, page not present instruction pointer = 0x20:0xc0a82bdb stack pointer = 0x28:0xc7020cf0 frame pointer = 0x28:0xc7020d08 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, def32 1, gran 1 processor eflags = interrupt enabled, resume, IOPL = 0 current process = 0 () [thread pid 0 tid 0 ] Stopped at pmap_map+0x2d: movl %eax,PTmap(,%edx,4) db> bt Tracing pid 0 tid 0 td 0xc0c608a0 pmap_map(c7020d64,bcc98000,bff98000,3,c7445000,...) at pmap_map+0x2d vm_page_startup(c748e000,a,c7020d88,c075e76e,0,...) at vm_page_startup+0x27f vm_mem_init(0,701ec00,701ec00,701e000,7025000,...) at vm_mem_init+0x18 mi_startup() at mi_startup+0x90 begin() at begin+0x2c db> >Release-Note: >Audit-Trail: >Unformatted: