Re: Panic with usb serial

Kostik Belousov wrote:
On Mon, Mar 31, 2008 at 09:48:55AM +0100, Vince Hoffman wrote:
Marcin Cieslak wrote:
Vince wrote:
Jeremy Chadwick wrote:
Regarding the USB serial adapter, I was supplied it though work a while
back. I believe from my rather fuzzy memory we got it though these guys
http://www.usbnow.co.uk/Cables-USB_to_RS232_Cables/c1_23/index.html
Although I wouldn't swear to it. I'll have an ask if anyone remembers on
monday.
Can you post a fragment of dmesg output? I am interested whether you
attach it to the ohci or uhci controller.

--Marcin

Sure,
Please not this is now a different usb adapter as I left mine at home :(
but I just tested and it exhibits the same behavior, (only difference I
can see is this says its FIDI while my one says its FTDI, possibly a typo?)

{root@prawn}#dmesg | grep uhub
uhub0: <Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1> on usb0
uhub0: 2 ports with 2 removable, self powered
uhub1: <Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1> on usb1
uhub1: 2 ports with 2 removable, self powered
uhub2: <Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1> on usb2
uhub2: 2 ports with 2 removable, self powered
uhub3: <Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1> on usb3
uhub3: 2 ports with 2 removable, self powered
uhub4: <Intel EHCI root hub, class 9/0, rev 2.00/1.00, addr 1> on usb4
uhub4: 8 ports with 8 removable, self powered
umass0: <DATAST0R Technology Corp SATA8000 FW1.0, class 0/0, rev
2.00/0.01, addr 2> on uhub4
ums0: <Microsoft Basic Optical Mouse, class 0/0, rev 1.10/0.00, addr 2>
on uhub2
ucom0: <FIDI usb serial converter, class 0/0, rev 1.10/4.00, addr 3> on
uhub2

And for what its worth:
{root@prawn}#more /var/crash/info.14
Dump header from device /dev/ad0s3b
Architecture: i386
Architecture Version: 2
Dump Length: 154411008B (147 MB)
Blocksize: 512
Dumptime: Mon Mar 31 09:25:54 2008
Hostname: prawn.unsane.co.uk
Magic: FreeBSD Kernel Dump
Version String: FreeBSD 7.0-STABLE #52: Tue Mar 25 13:45:50 GMT 2008
toor@xxxxxxxxxxxxxxxxxx:/usr/local/obj/usr/src/sys/PRAWN7ULE
Panic String: page fault
Dump Parity: 1302845723
Bounds: 14
Dump Status: good

Happy to provide more information but I'm not a programmer so you'll
probably have to ask me slowly and in words of one syllable ;)

I need two things:
1. The revision of the sys/kern/kern_conf.c file; in particular,
I need to know whether you have rev. 1.208.2.1 or 1.208.2.2.
2. Regardless of the outcome of the question 1, please show the output
of the "bt full" from the kgdb loaded with your kernel and crash
dump. See
http://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/kerneldebug.html
for details on how to obtain useful information from the crash dump.

1)
{root@prawn}#grep kern_conf.c sys/kern/kern_conf.c
__FBSDID("$FreeBSD: src/sys/kern/kern_conf.c,v 1.208.2.2 2008/03/24
13:09:55 kib Exp $");

2)
[/usr/obj/usr/src/sys/PRAWN7ULE](11:07:33)
{root@prawn}#kgdb kernel.debug /var/crash/vmcore.14
[GDB will not be able to debug user-mode threads:
/usr/lib/libthread_db.so: Undefined symbol "ps_pglobal_lookup"]
GNU gdb 6.1.1 [FreeBSD]
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "i386-marcel-freebsd".
There is no member named pathname.
(kgdb) bt full
#0 doadump () at pcpu.h:195
No locals.
#1 0xc05ae391 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:409
_giantcnt = Variable "_giantcnt" is not available.
(kgdb)


This isnt what I was expecting from the article referenced. Would it be
helpful me to update to the latest stable then reproduce (assuming i
still can.)



Vince

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