Re: Kernel 2.6.26.5 -> 2.6.27.2 [USB REGRESSION] (USB -> D_STATE)

[Justin Piszcz]

On Mon, 20 Oct 2008, Alan Stern wrote:

> On Sun, 19 Oct 2008, Justin Piszcz wrote:
>
> > > You should turn on the usbfs_snoop module parameter for usbcore and see
> > > what shows up in the system log.
> >
> > > Alan Stern
> >
> > Tried this, kernel would not boot up any further when I had that enabled
> > alongside the 'extra' debugging options in the kernel:
> >
> > http://home.comcast.net/~jpiszcz/20081019/2.6.27.2-usb-extra-debug.txt
>
> I'm not interested in your config file; I need to see the dmesg log.
>
> > > Please get sysrq-t of a hang.
> > >
> > > 	Regards
> > > 		Oliver
> >
> > Before I tried the above, I was able to get a sysrq-t of the hang:
> >
> > http://home.comcast.net/~jpiszcz/20081019/trace_before_trigger.txt
> > http://home.comcast.net/~jpiszcz/20081019/trace_after_trigger.txt
>
> Your trace is incomplete.  You might need to increase the size of the
> kernel log buffer (CONFIG_LOG_BUF_SHIFT) or the size of the buffer used
> by dmesg (the -s option).
>
> Alan Stern

You're right, I set it to 128 KiB and here is the full log, including the 
initial dmesg:

http://home.comcast.net/~jpiszcz/20081019/kern.log

Justin.
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