kern/56976: Random panic on reading virtual memory
John Gillis
zefram at zefram.net
Thu Sep 18 02:00:36 PDT 2003
>Number: 56976
>Category: kern
>Synopsis: Random panic on reading virtual memory
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Thu Sep 18 02:00:34 PDT 2003
>Closed-Date:
>Last-Modified:
>Originator: John Gillis
>Release: FreeBSD 4.8-STABLE i386
>Organization:
>Environment:
System: FreeBSD boobookittyfuck.zefram.net 4.8-STABLE FreeBSD 4.8-STABLE #3: Sun Aug 17 04:06:58 EDT 2003 zefram at boobookittyfuck.zefram.net:/usr/obj/usr/src/sys/BOOBOOKITTYFUCK i386
Developer machine running X and KDE, using an nVidia board. nVidia's drivers seem to make X eat alot of memory (nearly 1G before crash).
AMD XP 2000+ on a ASUS board, 512M DDR 2100 RAM. IBM 15G drive with 512M VM partition. I was using portupgrade at the time of the crash.
>Description:
Not much to describe, my computer randomly shut off. Here's some useful information (I hope). First is of course the error from
/v/l/messages, then I ran nm on the kernel (sorry, it was not in debug). Error appears to happen 44 double words (however long an
instruction pointer is) into vm_page_lookup. Anything I can do to be of help, please ask. I wonder if it could be a bad sector or some
such on the hard drive. Any thoughts? Any way to check?
------
Sep 18 04:34:26 boobookittyfuck /kernel: Fatal trap 12: page fault while in kernel mode
Sep 18 04:34:26 boobookittyfuck /kernel: fault virtual address = 0x13
Sep 18 04:34:26 boobookittyfuck /kernel: fault code = supervisor read, page not present
Sep 18 04:34:26 boobookittyfuck /kernel: instruction pointer = 0x8:0xc022ceb0
Sep 18 04:34:26 boobookittyfuck /kernel: stack pointer = 0x10:0xe05cee34
Sep 18 04:34:26 boobookittyfuck /kernel: frame pointer = 0x10:0xe05cee3c
Sep 18 04:34:26 boobookittyfuck /kernel: code segment = base 0x0, limit 0xfffff, type 0x1b
Sep 18 04:34:26 boobookittyfuck /kernel: = DPL 0, pres 1, def32 1, gran 1
Sep 18 04:34:26 boobookittyfuck /kernel: processor eflags = interrupt enabled, resume, IOPL = 0
Sep 18 04:34:26 boobookittyfuck /kernel: current process = 90949 (sh)
Sep 18 04:34:26 boobookittyfuck /kernel: interrupt mask = net bio cam
Sep 18 04:34:26 boobookittyfuck /kernel: trap number = 12
Sep 18 04:34:26 boobookittyfuck /kernel: panic: page fault
-------
> nm -n /kernel | grep c022ce
c022ce84 T vm_page_lookup
c022cee0 T vm_page_rename
>How-To-Repeat:
Running X & KDE for a week and a half, which ate up alot of virtual memory. Then compiling.
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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