Date: Sat, 15 Jun 2002 11:53:45 -0700 (PDT) From: blaze <blaze@rootshell.be> To: freebsd-gnats-submit@FreeBSD.org Subject: misc/39341: ppp + USB modem problem Message-ID: <200206151853.g5FIrjqs081720@www.freebsd.org>
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>Number: 39341
>Category: misc
>Synopsis: ppp + USB modem problem
>Confidential: no
>Severity: critical
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Sat Jun 15 12:00:07 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator: blaze
>Release: 4.6-RC
>Organization:
...
>Environment:
FreeBSD kalieye 4.6-RC FreeBSD 4.6-RC #6: Thu Jun 13 14:26:15 CEST 2002 root@kalieye:/usr/src/sys/compile/KALIEYE i386
>Description:
when i run ppp using my USB modem, (umodem as a module)
on great payload the modem shuts down and i receive the message:
usb0 host controller process error
usb0 host controller halted
and next the page fault:
Fatal trap 12: page fault while in kernel mode
fault virtual adress = 0x14
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc01fb1b3
stack pointer = 0x10:0xcde12d3c
frame pointer = 0x10:0xcde12d54
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 = 128(ppp)
interrupt mask = none
kernel: type 12 trap, code = 0
Stopped at spec_poll+0x
the nm command says:
root@kalieye:~# nm -n /kernel | grep c01fb1b3
root@kalieye:~# nm -n /kernel | grep c01fb1b
root@kalieye:~# nm -n /kernel | grep c01fb1
c01fb168 t spec_ioctl
c01fb198 t spec_poll
c01fb1c0 t spec_kqfilter
c01fb1fc t spec_fsync
>How-To-Repeat:
use a usb modem with ppp and give a lot of payload
(for example i do it using cvsup)
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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