From owner-freebsd-bugs@FreeBSD.ORG Mon May 19 15:00:31 2003 Return-Path: Delivered-To: freebsd-bugs@hub.freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id BD73837B430 for ; Mon, 19 May 2003 15:00:31 -0700 (PDT) Received: from freefall.freebsd.org (freefall.freebsd.org [216.136.204.21]) by mx1.FreeBSD.org (Postfix) with ESMTP id 4ED6E43FA3 for ; Mon, 19 May 2003 15:00:30 -0700 (PDT) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (gnats@localhost [127.0.0.1]) by freefall.freebsd.org (8.12.9/8.12.9) with ESMTP id h4JM0UUp089219 for ; Mon, 19 May 2003 15:00:30 -0700 (PDT) (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.12.9/8.12.9/Submit) id h4JM0Uht089218; Mon, 19 May 2003 15:00:30 -0700 (PDT) Resent-Date: Mon, 19 May 2003 15:00:30 -0700 (PDT) Resent-Message-Id: <200305192200.h4JM0Uht089218@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, Stacy Olivas Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id F3D0D37B401 for ; Mon, 19 May 2003 14:54:16 -0700 (PDT) Received: from digiflux.org (43.Red-80-59-151.pooles.rima-tde.net [80.59.151.43]) by mx1.FreeBSD.org (Postfix) with ESMTP id 63B4F43F85 for ; Mon, 19 May 2003 14:54:14 -0700 (PDT) (envelope-from olivas@digiflux.org) Received: from digiflux.org (localhost [127.0.0.1]) by digiflux.org (8.12.9/8.12.9) with ESMTP id h4JLsCuB055090 for ; Mon, 19 May 2003 23:54:13 +0200 (CEST) (envelope-from olivas@digiflux.org) Received: (from root@localhost) by digiflux.org (8.12.9/8.12.8/Submit) id h4JLsCtv055089; Mon, 19 May 2003 23:54:12 +0200 (CEST) Message-Id: <200305192154.h4JLsCtv055089@digiflux.org> Date: Mon, 19 May 2003 23:54:12 +0200 (CEST) From: Stacy Olivas To: FreeBSD-gnats-submit@FreeBSD.org X-Send-Pr-Version: 3.113 Subject: kern/52445: Kernel panics when mounting floppy on MFS filesystem X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: Stacy Olivas List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 19 May 2003 22:00:32 -0000 >Number: 52445 >Category: kern >Synopsis: Kernel panics when mounting floppy on MFS filesystem >Confidential: no >Severity: serious >Priority: high >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Mon May 19 15:00:29 PDT 2003 >Closed-Date: >Last-Modified: >Originator: Stacy Olivas >Release: FreeBSD 5.0-RELEASE-p7 i386 >Organization: >Environment: System: FreeBSD digiflux.org 5.0-RELEASE-p7 FreeBSD 5.0-RELEASE-p7 #4: Tue May 13 01:26:44 CEST 2003 olivas@digiflux.org:/usr/src/sys/i386/compile/Sentinel i386 >Description: When building a kernel with an MD_ROOT_SIZE size => 8000 bytes (~7.8 megs), after the kernel has successfully loaded, if you subsequently try mounting a floppy disk (to a mount point on the MFS) (doesn't matter if it's fresh floppy or has some files on it) the kernel panics with the following message: panic: isa_dmastart: bad bounce buffer syncing disks, buffers remaining... panic: bwrite: buffer is not busy??? But, for an MFS that is 7000 (~6.8 megs) it works with out a hitch. This behavior has been reproducable on two different systems with more than plenty of memort available. -- dmesg output of kernel that panics (MD_ROOT_SIZE=8000) (thank god dmesg is saved between warm boots): Copyright (c) 1992-2003 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 5.0-RELEASE-p7 #1: Fri May 16 15:18:39 CEST 2003     olivas@thos.digiflux.org:/usr/src/release/picobsd/warbsd/build_dir-warbsd/PICOBSD-warbsd Preloaded elf kernel "/kernel" at 0xc0f86000. Timecounter "i8254"  frequency 1193182 Hz Timecounter "TSC"  frequency 360790606 Hz CPU: AMD-K6(tm) 3D+ Processor (360.79-MHz 586-class CPU)   Origin = "AuthenticAMD"  Id = 0x591  Stepping = 1   Features=0x8021bf   AMD Features=0xffffffff80000800 real memory  = 167772160 (160 MB) avail memory = 146579456 (139 MB) Initializing GEOMetry subsystem K6-family MTRR support enabled (2 registers)     ACPI-0159: *** Error: AcpiLoadTables: Could not get RSDP, AE_NO_ACPI_TABLES     ACPI-0213: *** Error: AcpiLoadTables: Could not load tables: AE_NO_ACPI_TABLES ACPI: table load failed: AE_NO_ACPI_TABLES npx0: on motherboard npx0: INT 16 interface Using $PIR table, 4 entries at 0xc00fdf70 pcib0: at pcibus 0 on motherboard pci0: on pcib0 isab0: at device 1.0 on pci0 isa0: on isab0 cbb0: at device 10.0 on pci0 cardbus0: on cbb0 pccard0: <16-bit PCCard bus> on cbb0 pci_cfgintr: 0:10 INTA routed to irq 11 cbb1: at device 10.1 on pci0 cardbus1: on cbb1 pccard1: <16-bit PCCard bus> on cbb1 pci_cfgintr: 0:10 INTB routed to irq 11 pci0: at device 18.0 (no driver attached) ohci0: mem 0xfecff000-0xfecfffff irq 10 at device 19.0 on pci0 usb0: OHCI version 1.0, legacy support usb0: on ohci0 usb0: USB revision 1.0 uhub0: OPTi OHCI root hub, class 9/0, rev 1.00/1.00, addr 1 uhub0: 2 ports with 2 removable, self powered atapci0: port 0xfcf0-0xfcff at device 20.0 on pci0 atapci0: Busmastering DMA not supported ata0: at 0x1f0 irq 14 on atapci0 ata1: at 0x170 irq 15 on atapci0 orm0: