Date: Sat, 31 Aug 2002 23:30:32 -0700 (PDT) From: Don Lewis <dl-freebsd@catspoiler.org> To: kris@obsecurity.org Cc: current@FreeBSD.ORG Subject: Re: Page faults from bento cluster (Re: Problems reading vmcores) Message-ID: <200209010630.g816UWwr067818@gw.catspoiler.org> In-Reply-To: <20020901035735.GA9690@xor.obsecurity.org>
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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?
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