From owner-freebsd-current Sat Aug 31 23:30:42 2002 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 C192B37B400 for ; Sat, 31 Aug 2002 23:30:40 -0700 (PDT) Received: from gw.catspoiler.org (217-ip-163.nccn.net [209.79.217.163]) by mx1.FreeBSD.org (Postfix) with ESMTP id 5776F43E3B for ; Sat, 31 Aug 2002 23:30:40 -0700 (PDT) (envelope-from dl-freebsd@catspoiler.org) Received: from mousie.catspoiler.org (mousie.catspoiler.org [192.168.101.2]) by gw.catspoiler.org (8.12.5/8.12.5) with ESMTP id g816UWwr067818; Sat, 31 Aug 2002 23:30:37 -0700 (PDT) (envelope-from dl-freebsd@catspoiler.org) Message-Id: <200209010630.g816UWwr067818@gw.catspoiler.org> Date: Sat, 31 Aug 2002 23:30:32 -0700 (PDT) From: Don Lewis Subject: Re: Page faults from bento cluster (Re: Problems reading vmcores) To: kris@obsecurity.org Cc: current@FreeBSD.ORG In-Reply-To: <20020901035735.GA9690@xor.obsecurity.org> MIME-Version: 1.0 Content-Type: TEXT/plain; charset=us-ascii Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On 31 Aug, Kris Kennaway wrote: > panic: page fault > panic messages: > --- > Fatal trap 12: page fault while in kernel mode > fault virtual address = 0x4 Looks like a NULL structure pointer dereference. It looks like the access is four bytes into the structure. > #7 0xc021d91f in exec_elf32_imgact (imgp=0xda326bb4) at imgact_elf.c:607 > #8 0xc022a9a2 in execve (td=0xc484c240, uap=0xda326d10) > at /usr/src/sys/kern/kern_exec.c:280 > #9 0xc03a8a31 in syscall (frame= > {tf_fs = 47, tf_es = 47, tf_ds = 47, tf_edi = 135022716, tf_esi = 0, tf_ebp = -1077940704, tf_isp = -634229388, tf_ebx = 135022736, tf_edx = 135022736, tf_ecx = 135022895, tf_eax = 59, tf_trapno = 12, tf_err = 2, tf_eip = 134697908, tf_cs = 31, tf_eflags = 659, tf_esp = -1077940748, tf_ss = 47}) > at /usr/src/sys/i386/i386/trap.c:1050 > #10 0xc0399a9d in Xint0x80_syscall () at {standard input}:140 > ---Can't read userspace from dump, or kernel process--- I've seen other reports of similar crashes on the list. What version of imgact_elf.c is this? To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message