Date: Wed, 7 Apr 2004 07:39:45 -0700 (PDT) From: Bjorn <bjorn@sccs.swarthmore.edu> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/65292: panic: page fault Message-ID: <200404071439.i37EdjBq021139@www.freebsd.org> Resent-Message-ID: <200404071450.i37EoGF6092157@freefall.freebsd.org>
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>Number: 65292
>Category: kern
>Synopsis: panic: page fault
>Confidential: no
>Severity: critical
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Wed Apr 07 07:50:16 PDT 2004
>Closed-Date:
>Last-Modified:
>Originator: Bjorn
>Release: 4.9 (stable)
>Organization:
XO Audio
>Environment:
FreeBSD twiggy 4.9-STABLE FreeBSD 4.9-STABLE #4: Fri Apr 2 19:46:37 EST 2004 root@twiggy:/usr/obj/usr/src/sys/TWIGGY i386
>Description:
Sometimes I notice my mouse gets sluggish and jerky. This is atypical even on a loaded freeBSD dydtem, so I usually notice right away. when that happens, I notice my drive light is on so it must be working on seomthing furiously, but I see nothing too wierd in top/iostat/fuser (though I'm not expert with i/o stat or fuser). A few minutes later my system reboots itself. this is all I get:
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x4
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc0282f9a
stack pointer = 0x10:0xd1f16d28
frame pointer = 0x10:0xd1f16d30
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 = 10791 (usb)
interrupt mask = none
trap number = 12
panic: page fault
syncing disks... 68 9 3 2 1
done
Uptime: 3d22h46m22s
>How-To-Repeat:
Not sure what triggers this, but I think it is USB related. Most recently it happened when I was plugging and unplugging a UBS 2.0 hub with some stuff attached (mouse and printer). Something simmilar used to happen when I used a USB-to-IDE converter, but I didn't manage to get the console output because I wasn't setup with console to seriel port at that time and don't use that device on that machine anymore. (see bug kern/63779)
>Fix:
not sure.
>Release-Note:
>Audit-Trail:
>Unformatted:
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