Re: Bug 60810 - Kernel oops with controller XHCI while wait usb packet

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On Wed, Sep 04, 2013 at 12:22:06AM +0800, Giovanni wrote:
> > > On Tue, Sep 03, 2013 at 02:14:14AM +0800, Giovanni
> > wrote:
> > > > > On Sat, Aug 31, 2013 at 12:11:49AM
> > > > > +0800, Giovanni wrote:
> > > > > > 
> > > > > 
> > > > > I drafted a patch, please have a test and
> > enable
> > > > > CONFIG_XHCI_HCD_DEBUGGING in kernel
> > configuration at same
> > > > > time.
> > > > > 
> > > > > 8<---------------------- cut here
> > > > >----------------------------
> > > > >
> > > > > 
> > > > >Thanks,
> > > > >Rui
> > > > 
> > > > I tried your patch. This is new log after kernel
> > panic: https://bugzilla.kernel.org/attachment.cgi?id=107386
> > > > I have enabled CONFIG_USB_XHCI_HCD_DEBUGGING, but
> > I can't see none debug message for XHCI.
> > > I have /proc/sys/kernel/printk to 7. I do
> > something wrong?
> > > > 
> > > 
> > > Sorry, I fogot to tell you CONFIG_USB_DEBUG also need
> > to be enabled.
> > > Could you rebuild again?
> > > 
> > 
> > Please apply this patch based my last patch, and have a test
> > again.
>  
> New log with both patches applied and USB_DEBUG enabled
> https://bugzilla.kernel.org/attachment.cgi?id=107400
> 
> log size is limited I tried also with dmesg -s 4194304 but with low success.
> I hope there is enough informations.
> 

Hi Giovanni,

Sorry, I am busy on another task today, and I will look at this trace
log later. By the way, I suggest that you can change the kernel buffer
size in below steps before building:

make menuconfig  ->  General setup  -> (17)Kernel log buffer size

You can update buffer size from 17 to 21, then I think you should not
miss dmesg log.

Add Sarah and Mathias to look at this trace log.

Thanks,
Rui

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