From owner-freebsd-current@FreeBSD.ORG Thu Feb 5 15:17:38 2004 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id ECFF416A4CE for ; Thu, 5 Feb 2004 15:17:38 -0800 (PST) Received: from troutmask.apl.washington.edu (troutmask.apl.washington.edu [128.208.78.105]) by mx1.FreeBSD.org (Postfix) with ESMTP id B1AFE43D3F for ; Thu, 5 Feb 2004 15:17:37 -0800 (PST) (envelope-from sgk@troutmask.apl.washington.edu) Received: from troutmask.apl.washington.edu (localhost [127.0.0.1]) i15NHbTA018231 for ; Thu, 5 Feb 2004 15:17:37 -0800 (PST) (envelope-from sgk@troutmask.apl.washington.edu) Received: (from sgk@localhost)i15NHbpa018230 for freebsd-current@freebsd.org; Thu, 5 Feb 2004 15:17:37 -0800 (PST) (envelope-from sgk) Date: Thu, 5 Feb 2004 15:17:37 -0800 From: Steve Kargl To: freebsd-current@freebsd.org Message-ID: <20040205231737.GB17451@troutmask.apl.washington.edu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.4.1i Subject: Interrupts, ATAng, and wayward pointers, oh my! X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 05 Feb 2004 23:17:39 -0000 Ladies and Gents, I have the following (hand transcript) panici during boot from a kernel built from 1 hour old sources: ad0: 38154MB [77520/16/63] at ata0-master UDMA100 ata1-slave: FAILURE - ATAPI_IDENTIFY no interrupt ata1-slave: FAILURE - ATAPI_IDENTIFY no interrupt acd0: DVDROM at ata1-master WDMA2 Mounting root from ufs:/dev/ad0s3a Memory modified after free 0xc407a800(508) val=ff00ff00 @ 0xc407a800 Fatal trap 12: page fault while in kernel mode fault virtual address = 0xff00ff20 fault code = supervisor read, page not present instruction pointer = 0x8:0xc05b945a stack pointer = 0x10:0xd84d1984 frame pointer = 0x10:0xd84d19a0 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 = 49 (sh) kernel: type 12 trap, code=0 stopped at mtrash_ctor+0x3a: movl 0x20(%eax),%eax db> trace mtrash_ctor(c407a800,200,0) at mtrash_ctor+0x3a uma_zalloc_arg(c0c45cc0,0,2) at uma_zalloc_arg+0x169 malloc(188,c0650d00,2,3,c3fe27e0) at malloc+0xb7 elf32_load_file(c41c2528,d4cb20f4,d84d1ab0,d84d1bd0,1000) at elf32_load_file+0x51 exec_elf32_imgact(d84d1b94,c051fb78,c067d450,0,0) at exec_elf32_imgact+0x4c7 kern_execve(c3fe27e0,8065098,8065084,8065094,0) at kern_execve+0x33a execve(c3fe27e0,d84d1d14,3,0,286) at execve+0x18 syscall(2f,2f,2f,8065098,8065084) at syscall+0x217 Xint0x80_syscall() at Xint80_syscall+0x1d --- syscall (59, FreeBSD ELF32, execve), eip = 0x2811ca6f, esp=0xbfbfec8c, ebp = 0xbfbfecb8 db> I can't get a core dump. -- Steve