Here is the code I just used to panic it just now (requires libusb):
/////////// usbtest.c:
#include "/usr/local/include/usb.h"
int main(int argc, char **argv){
while(1){
usb_init ();
usb_find_busses ();
usb_find_devices ();
}
return 0;
}
//////////// Makefile:
CC=gcc
LD=ld
CFLAGS = -g -c -Wall
all: usbtest.o
$(CC) -o usbtest usbtest.o /usr/local/lib/libusb.a
clean:
rm -f usbtest usbtest.tgz *.o *~
It took me about 15 plug-in/unplug cycles to get it to crash
(sometimes as many as 30 during previous testing when I'm unlucky).
There's about a 200ms window during which the panic will occur, and
it's hard to say exactly when that is. You can probably add a printf
to given an indication of where in the loop you're plugging in the
hub, so you can change the timing around a bit.
-victor
On 7/6/07, M. Warner Losh <[EMAIL PROTECTED]> wrote:
Thanks for the update Victor.
I can't get it to happen in current. Maybe I'm doing something
differently than you. Do you have an easy recipe for causing the
panic?
Warner
In message: <[EMAIL PROTECTED]>
"Victor Liu" <[EMAIL PROTECTED]> writes:
: Managed to find a newer box, and yes, I could duplicate the panic
: within less than 10 attachments. uname -a:
: FreeBSD xxxxxxxxxxxxxxxxxx 6.2-RELEASE FreeBSD 6.2-RELEASE #0: Fri Jan
: 12 11:05:30 UTC 2007
: xxxxxxxxxxxxxxxxxxxxxxxxxxxx:/usr/obj/usr/src/sys/SMP i386
:
: -victor
:
: On 7/4/07, M. Warner Losh <[EMAIL PROTECTED]> wrote:
: > The following reply was made to PR usb/114310; it has been noted by GNATS.
: >
: > From: "M. Warner Losh" <[EMAIL PROTECTED]>
: > To: [EMAIL PROTECTED]
: > Cc: [EMAIL PROTECTED]
: > Subject: Re: usb/114310: USB hub attachment panics kernel during libusb
: > device scan
: > Date: Wed, 04 Jul 2007 22:03:35 -0600 (MDT)
: >
: > Would you happen to know if this happens on FreeBSD -current?
: >
: > Warner
: > _______________________________________________
: > [email protected] mailing list
: > http://lists.freebsd.org/mailman/listinfo/freebsd-usb
: > To unsubscribe, send any mail to "[EMAIL PROTECTED]"
: >
:
:
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