Date: Wed, 12 Apr 2000 15:42:46 -0700 (PDT) From: jacobsm@gate.net To: freebsd-gnats-submit@FreeBSD.org Subject: kern/17961: Fatal Trap 12. Page fault while in kernel mode Message-ID: <200004122242.PAA91162@freefall.freebsd.org>
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>Number: 17961
>Category: kern
>Synopsis: Fatal Trap 12. Page fault while in kernel mode
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Wed Apr 12 15:50:01 PDT 2000
>Closed-Date:
>Last-Modified:
>Originator: Mark Jacobs
>Release: 4.0 Stable
>Organization:
NA
>Environment:
FreeBSD primary.jacobs.org 4.0-STABLE FreeBSD 4.0-STABLE #0 Wed Apr 12 17:20:32
EDT 2000 root@primary.jacobsm.org;/usr/src/sys/compile/MAIN i386
>Description:
Running coldsync 1.1.7 with Handspring Visor causes Fatal Trap 12 and
system reboots.
Kernel debug shows pagefault in /dev/usb/ugen.c:1216
switch (sce->edesc->bmAttributes & US_XFERTYPE) {
print s
$1 = 0
print sce
$2 = (struct ugen_endpoint *) 0x4008c840
print sce->edesc
Cannot access memory at address 0x4008c844
>How-To-Repeat:
Attach Visor Cradle to USB port, press hotsync button.
Run coldsync -p /dev/ugen0
Press hotsync button again
kernel panic, reboot
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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